You’re holding your baby. You love them more than you knew you were capable of loving anything.

And then a thought appears — one you didn’t ask for, didn’t want, and would never, ever choose. Maybe it’s an image of the baby falling. A flash of something violent. A fear so specific and vivid it lodges itself in your mind.

And then, almost immediately, comes the second wave: the terror about the thought itself. What does it mean that I thought that? Am I dangerous? Am I losing my mind? What would happen if I told someone?

If this has happened to you, please keep reading. Because what you need to know first is this: you are not alone, you are not dangerous, and this is not a reflection of who you are.

You Are Not the Only One

These thoughts have a name. They’re called intrusive thoughts — unwanted, uninvited mental images or fears that pop into your awareness without warning. They feel foreign. They feel wrong. They feel like the opposite of everything you believe about yourself as a mother.

That feeling of wrongness is actually part of what they are.

Psychology Today describes them this way: having a scary thought is very different from wanting to act on one. The thought showing up in your mind is not evidence of anything dangerous about you. It is evidence that your brain is working overtime.

As for how common they are: research published in BMC Psychiatry found that between 70 and 100 percent of new mothers experience unwanted, intrusive thoughts related to their baby. That is not a typo. The vast majority of new mothers, including the ones who look fine and the ones posting happy photos, including the one sitting next to you at the pediatrician’s office, have had thoughts that scared them.

Most of them never said anything either.

Why Your Brain Does This

After birth, your brain is running in a state it’s never run in before. You’re sleep-deprived in a way that’s genuinely hard on your ability to manage unwanted thoughts. Your hormones may have shifted dramatically. And you’re suddenly responsible for someone completely helpless, which means your brain’s threat-monitoring system is in full gear, scanning constantly for anything that could go wrong.

For a lot of new mothers, that system starts generating “what if” scenarios. What if I drop her? What if something terrible happens? What if I lose control?

It’s not a sign that something’s wrong with you; rather, it’s a sign that you care enormously and your brain is being a bit clumsy at processing that.

What These Thoughts Are Not

The thoughts that come with new motherhood, however dark, weird, or specific they might be, do not indicate that the mom wants to act on them.

This is one of the most important things researchers who study postpartum mental health have found: a study following nearly 400 postpartum women found no evidence that having these thoughts, even the most distressing ones, is connected to any increased risk of actually harming an infant. The mothers most disturbed by these thoughts are almost always the last ones who would ever act on them. The discomfort you feel about the thought is the evidence of that.

What makes a thought intrusive is that it feels unlike you. You didn’t choose it, and it probably bothers you that you had the thought. You’d like to make it go away. That is not the profile of someone dangerous, or someone “losing” their mind.

The Fear of Telling Someone

One of the hardest parts of intrusive thoughts is the secret-keeping. Many mothers hide these thoughts for weeks or months because they’re scared of what will happen if they say them out loud.


If that’s you, here is what you need to know about telling a perinatal-trained mental health provider: they will not be surprised. They will not panic. They will not report you or try to take your baby. A clinician trained in perinatal mental health will have heard these thoughts many times before and will be able to tell the difference between a thought that needs treatment and a thought that signals real danger.

What they will do is help.

Postpartum Support International has a helpline and a provider directory if you’re looking for a place to start. You can also reach out to us directly at Marley Mental Health to speak to a provider trained in perinatal mental health.

When Intrusive Thoughts Are More Than a Passing Thing

For most mothers, intrusive thoughts come and go. They’re upsetting, but they don’t take over.

For some mothers, they do take over, becoming more relentless and sometimes paired with behaviors designed to manage the fear (for example, avoiding certain rooms, hiding objects, or asking for reassurance over and over). When that happens, it may be a sign of postpartum OCD, a very treatable condition. (Our full guide to postpartum OCD goes into that in more detail.)

What helps most for both intrusive thoughts and postpartum OCD is working with a therapist trained in a specific approach called Exposure and Response Prevention (ERP), which is designed specifically to break the cycle that keeps these thoughts so sticky. Group therapy can also be powerful. There is something that happens when you say a thought out loud to a room full of other mothers and find recognition instead of alarm. That moment can change things.

You Don’t Have to Carry This Alone

If you’ve been sitting with these thoughts in silence, you’ve already been carrying something heavy. You don’t have to keep carrying it by yourself.

Our Perinatal Mental Health intensive outpatient program in Phoenix, Arizona, Held Mom & Baby IOP, was built for exactly this — for mothers who have thoughts they’re afraid to say, who feel like something must be wrong with them, and who are ready to get real support.

You are a mother who needs support, and that support exists.

Medically reviewed by Marlena Stanford, LMSW, 2026

Sources & Further Reading

Psychology Today (2025) — The Scary Thoughts No One Talks About After Birth

BMC Psychiatry, Collardeau et al. (2019) — prevalence of unwanted intrusive thoughts

Fairbrother et al. (2022) — intrusive thoughts and infant-harm risk

Postpartum Support International — helpline & provider directory

International OCD Foundation — ERP for perinatal OCD