In the days after birth, your hormones don't gently taper. They fall off a cliff. The oestrogen and progesterone that climbed for nine months drop dramatically within about 72 hours of delivering the placenta. Few changes in the human body are so steep, so fast.
That crash, layered on top of no sleep, a recovering body, and the sheer enormity of caring for a newborn, is why the early weeks can feel so overwhelming.
What's common and usually passes:
What deserves support, not silence:
If low mood, anxiety, hopelessness, intrusive thoughts, or a sense of disconnection from your baby last beyond two weeks, or feel intense, that may be postnatal depression or anxiety, and it is common, treatable, and absolutely not a reflection of you as a mother. Reaching out early makes recovery faster. Please tell your midwife, health visitor, or doctor. (If you ever have thoughts of harming yourself or your baby, seek help urgently — you deserve immediate support.)
A couple of other flags worth a check: a thyroid that goes out of balance after birth is common and can masquerade as "just tiredness," and very heavy bleeding or fever needs prompt review.
Be as gentle with yourself as you'd be with a friend. Your body has just done something extraordinary, and it's recalibrating at a pace it never has to manage at any other time. You don't have to do this stretch alone.
Why do I feel so emotional after having a baby?
A steep drop in oestrogen and progesterone within days of birth, combined with exhaustion, drives the common "baby blues" — usually easing within two weeks.
When is postpartum low mood more than the baby blues?
If low mood, anxiety, or hopelessness last beyond two weeks or feel intense, it may be postnatal depression — common and treatable. Reach out to a health professional.
Related reading: Why anxiety spikes in perimenopause · Thyroid or hormones? · Take the free Hormone Quiz