Week 3
First root, unseen underground is a story of something beginning beyond view. It makes room for wonder, uncertainty, and every feeling in between.
This week at a glance
Size
No size is stated — pregnancy is dated from before conception, and there is nothing yet to measure.
The flower
First root, unseen () — this week’s plate, drawn at your baby’s scale.
You might notice
No symptom claim drafted · Waiting · Clinician review needed
How big is the baby at 3 weeks?
No size is stated at week 3. Pregnancy is dated from the first day of your last period, so the earliest weeks come before there is anything to measure — this page says so rather than inventing a comparison.
Fertilization can occur during this week, when egg and sperm unite in a fallopian tube to form a single cell. That cell divides as it travels toward the uterus; implantation follows when the growing cluster attaches to the uterine lining.1
3 weeks pregnant is how many months?
Week 3 falls in the first month of pregnancy. Weeks and months don’t divide evenly, and your antenatal care counts in weeks — so Zohra keeps weeks, and prints the month for the relatives who ask.
That puts you in the first trimester (weeks 1–13).
What might you be noticing?
No pregnancy-specific symptom claim is included for this week: the fetched sources describe fertilization and implantation timing but do not support a reliable week-3 symptom pattern. The clinician should decide whether this early-week card keeps that exception.1
Make a note of the dates you already know, without trying to solve the whole calendar. Begin a private word list for this season: hopes, questions, names, places, or colors.
For the record: If this week had a hidden root, what would you hope it was reaching toward? — this week’s page in the app asks the same thing. All forty prompts are here.
Written from the sources above and checked against them. Not reviewed by a clinician — see the editorial policy. Zohra is a journal, not medical care; for anything worrying, talk to your midwife or doctor.