Trimester 1 · Week 5 of 40
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5 weeks pregnant
Your baby is the size of a sesame seed
Length
0.05″
0.13 cm
Weight
<0.01 oz
Trimester
1
What's happening at 5 weeks
The neural tube is forming — the future brain and spinal cord.
What your baby is doing
Three layers of cells are organizing into the systems that will become every part of your baby. The heart is a tiny tube that will start beating later this week.
What's happening to you
Missed period confirmed. Symptoms can hit hard this week — fatigue that floors you, sore breasts, peeing constantly.
On the heartbeat
No way to hear anything yet. The heart is barely a tube. Your first early ultrasound (if scheduled) won't be for another couple weeks.
Your journal prompt for week 5
“What's the first person, or thing, you reached for when you saw the test?”
Write it in CudlyStart your pregnancy story today.
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