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What Lack of Sleep Can Do to Your Mental Health After Becoming a Mom

Before you have a baby, people love to tell you that you’re never going to sleep again. There’s the “get your sleep now”, the “just wait”, and of course “sleep when the baby sleeps”, which sounds reasonable enough until your baby decides their favorite place to nap is directly on top of you while you’re starving, have to shower, and have been staring at your water bottle across the room for the last 45 minutes.

So yes, most of us go into motherhood knowing sleep is probably going to look different for a while. What’s harder to understand before you’re actually living it is how much thinking about sleep can start taking up space in your day, especially when every night is different and you have no idea whether you’re about to get four hours in a row or be back up before you’ve even really fallen asleep.

Postpartum sleep deprivation can be waking up over and over, but it’s also lying down knowing you might be needed again in 45 minutes, finally getting back into bed after a feeding and immediately calculating how much time is left before morning, or having one really good night and spending the entire next day wondering what you did differently so you can somehow make it happen again.

You’re already recovering, learning this completely new person, figuring out what motherhood looks like for you, and adjusting to a life that changed basically overnight. Being exhausted through all of that deserves a little more acknowledgment than “well, that’s having a newborn.” 

New Mom Sleep Deprivation Can Feel Like More Than Being Tired

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When you haven’t slept well for a while, it can start showing up in parts of your day that don’t immediately seem connected to sleep. You may know logically that you’re tired, but then find yourself wondering why you’re crying over something you normally wouldn’t care about, why making one simple decision feels like way too much work, or why you suddenly have zero patience for the sound of someone chewing.

There are a lot of ways this can look in everyday postpartum life:

  • You walk into a room and completely forget what you came in there to do.
  • You read the same text three times and still don’t really process what it says.
  • A small inconvenience feels significantly bigger than you know it normally would.
  • Someone asks what you want for dinner and suddenly choosing between two takeout places feels like an unreasonable amount of responsibility.
  • You finally get a break and spend the first ten minutes of it trying to decide what would make the break feel “worth it.”
  • You lose your train of thought halfway through a sentence or have trouble finding a word you know you know.
  • You feel more emotional, impatient, scattered, or unlike yourself and can’t really pinpoint one particular reason why.

And honestly, there may not be one particular reason. You’re moving through a huge physical and emotional transition while also operating on sleep that may be shorter, lighter, and more interrupted than what your body was used to before your baby arrived.

You don’t have to figure out whether every hard moment is hormones, sleep deprivation, postpartum adjustment, anxiety, or simply a crappy afternoon. What matters more is recognizing that being this tired can change how much capacity you have for everything else, and struggling with that doesn’t say anything about how well you’re adjusting to motherhood.

When You Start Thinking About Sleep Almost as Much as You’re Sleeping

There’s the amount of sleep you’re actually getting, and then there’s all the mental energy that can go into trying to predict, protect, calculate, and understand it. This is the part that can really sneak up on you because at first, paying attention makes perfect sense—you’re exhausted and obviously want to know when you might get some rest.

Then suddenly you have a running sleep spreadsheet in your head that nobody asked you to create.

  • Okay, if the baby goes down by 8:00 and gives me the same stretch as last night, I could get four hours…
  • That nap was only 27 minutes. Does that mean bedtime is going to be a mess?
  • They slept longer yesterday. What did we do differently?
  • If I go to sleep right now, how much time could I realistically get before the next feed?
  • Was that a sound? Are they waking up?
  • Should I even fall back asleep if they’ll probably be up again soon?

And then there’s the particularly cruel part where the baby is finally asleep and you aren’t.

You know you should go to bed because this could be your longest stretch of sleep, but it’s also the first time all day that nobody needs anything from you. You want to shower, eat something with both hands, talk to your partner, watch one episode of something, scroll mindlessly for twenty minutes, or just sit there and exist as yourself for a second.

Of course, now you’re watching the clock while you do it because every minute awake feels like sleep you’re voluntarily giving up. So even your tiny bit of alone time somehow comes with math.

When a Hard Night Starts Before the Night Even Happens

After enough unpredictable nights, you may notice that bedtime starts bringing up feelings before anything has actually gone wrong. Yesterday the baby gave you a long stretch, the night before that they were up constantly, and tonight…who knows.

That uncertainty can make it really tempting to look for clues throughout the day. You start wondering whether naps were good enough, whether bedtime is too early, whether bedtime is too late, whether you should have fed them again, whether something you did yesterday was the magical reason they slept better.

Then nighttime comes and your own ability to cope tomorrow can start feeling tied to what happens over the next several hours.

You may notice thoughts like:

  • I really don’t know if I can do another night like last night.
  • Please just give me a few hours.
  • If they wake up now, I’m barely going to have slept.
  • How am I supposed to function tomorrow if this keeps happening?
  • Why does everyone else’s baby seem to sleep longer than mine?
  • I thought we were finally getting somewhere.

There’s nothing strange about desperately wanting sleep when you’re exhausted. Your brain is trying to anticipate something that has a very real impact on how you feel, while dealing with the frustrating reality that you don’t actually get to control exactly how the night unfolds.

That can be where lack of sleep and anxiety start getting tangled together. You need sleep, so you think about sleep, but thinking about it constantly can make every nap, wake-up, bedtime, and number on the clock feel increasingly important.

When Baby Sleep Starts Feeling Like Something You’re Supposed to Figure Out

It doesn’t help that there is an unbelievable amount of information about baby sleep available at all times. Wake windows, schedules, nap lengths, regressions, routines, sleep associations, sample schedules by age…you could spend the entirety of the baby’s nap researching what the baby should apparently be doing during that exact nap.

(We get why people go down this rabbit hole.)

When you’re exhausted, it’s easy to start believing there must be some combination you haven’t figured out yet. If bedtime were 20 minutes earlier, if that last nap were shorter, if the room were darker, if you followed the schedule more closely, maybe tonight would finally be the night everybody sleeps.

Information can absolutely be helpful, especially when you’re trying to understand something completely new. But babies are also babies, their sleep changes constantly as they grow, and one rough night doesn’t mean you did something wrong during the day.

The same goes for a great night. Sometimes you can do exactly what you did yesterday and get a completely different result tonight, which is maddening when all you want is enough consistency to know when you can close your own eyes.

Loving Your Baby Doesn’t Make You Less Tired

This is one of those places where motherhood can hold two completely true things at once. You can be deeply grateful for your baby, completely obsessed with them, unable to believe you get to be their mom…and also want someone else to take them for a few hours so you can sleep.

You might find yourself counting down until your partner gets home, feeling relieved when someone offers to hold the baby, or having a moment during another overnight wake-up where you genuinely don’t know how you’re going to get out of bed again. Then five minutes later you’re looking down at their sleepy little face thinking you could stare at them forever.

Both get to be part of your experience.

Struggling with new mom sleep deprivation doesn’t tell us whether you’re grateful enough, enjoying motherhood enough, or bonding with your baby the way you’re “supposed” to. It tells us you’re tired, and sleep is a pretty fundamental thing for a human body to need.

What If Support Isn’t Only About Getting the Baby to Sleep?

When sleep is affecting how you feel, it makes complete sense that your first thought is probably how do I get more sleep? Practical support matters here, whether that’s sharing nighttime responsibilities when your family situation allows for it, letting someone take over while you rest, or bringing questions about your baby’s sleep to their healthcare provider.

But there’s also a mom living through all of this, and sometimes she gets a little lost in the conversation about what the baby is doing.

It can be worth checking in with things like:

  • How much of my day am I spending thinking or worrying about tonight?
  • What happens to my mood after a particularly rough night?
  • Am I starting to feel pressure to “fix” something that may simply take some time?
  • When someone offers help, can I actually let myself use that time to rest or do something I need?
  • Have I started comparing my baby’s sleep to everyone else’s?
  • Does one bad night immediately make me feel like we’re back at square one?
  • When I’m struggling, who actually knows how I’m doing?

You don’t need to turn these questions into another postpartum checklist to complete correctly. They’re simply a way to make sure you’re paying some attention to the person who is getting up with the baby, too.

When You Need Somewhere to Talk About How Tired You Really Are

The postpartum period asks a lot of you physically and emotionally, and lack of sleep can make everything else you’re carrying feel heavier. If you’ve noticed more anxiety, irritability, overwhelm, tearfulness, or you simply don’t feel quite like yourself lately, you don’t have to figure out whether it’s “bad enough” or whether sleep explains all of it before talking to someone.

At Mindful Mental and Behavioral Health, therapy for postpartum mental health, anxiety, and life transitions can give you somewhere to talk about motherhood without needing to clean up the complicated parts first. You can love your baby and talk about how hard the nights have been, how much you’re thinking about sleep, how badly you want to feel more like yourself, or how weird it is to have your entire mood start depending on a tiny person’s willingness to stay asleep.

And yes, you can even talk about being tired of talking about sleep.

Because while everyone around you is asking “How’s the baby sleeping?”, there’s another question worth asking too:

How are you doing with all of this?

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