Your baby is the size of a Sesame Seed. Discover exactly what is happening to your body and your baby this week.
Week 5 in detail
The neural tube (future brain and spinal cord) is closing. The heart tube starts to beat and move blood, even if no one can hear it yet. Limb buds and early vessels are appearing. Folate matters this week more than any fruit comparison.
hCG is climbing fast. Fatigue, peeing more, and nausea can start or intensify. Smell aversion is common. None of that proves the pregnancy is “strong” or “weak” — hormone curves vary.
Ginger, small meals, and water help some people; they do not fix everyone. Use the checklist above for food-safety and skincare. If vomiting means you cannot keep fluids down, that is a same-day clinical call, not a wait-it-out week.
A general guide, not medical advice. Scan timing and symptoms vary — ask your clinician.
This chart visualizes the average length of the baby from week 1 to 40. Values are based on standard clinical averages.