4 weeks pregnant
Quick answer
At 4 weeks pregnant, your baby is about the size of a poppy seed: around under 1 cm crown to rump and under 1 g. A tiny ball of cells is settling into the lining of your womb. The placenta is beginning to form.
Your baby at 4 weeks
A tiny ball of cells is settling into the lining of your womb. The placenta is beginning to form.
| Size | About the size of poppy seed |
|---|---|
| Length | under 1 cm crown to rump |
| Weight | under 1 g |
Your body at 4 weeks
You may notice a missed period, tender breasts and tiredness that hits hard. Take folic acid daily and book your first appointment.
For your partner
She may feel exhausted long before anything shows.
- Take over cooking if smells bother her
- Keep the news private until she's ready
- Go with her to the first appointment
Call your doctor or hospital straight away for bleeding, severe pain, fluid leaking, severe headache or vision changes.