Week 6
Your baby is the size of a Sweet pea
Baby Size
Sweet pea
Length
0.2 in (5 mm)
Weight
Less than 0.04 oz
Trimester
First Trimester
Your Baby at Week 6
Your baby is now the size of a sweet pea, and their tiny heart has divided into chambers — beating at about 100-160 beats per minute.
Key milestone: The heart divides into chambers. The jaw, cheeks, and chin begin forming.
Your Symptoms
Nausea peaks for many. Breast changes, heightened sense of smell, mood swings.
Tip for This Week
Stay hydrated. If vomiting is severe, contact your healthcare provider.
Your Body at Week 6
During the first trimester, your body is working overtime to build the placenta and support rapid embryonic development. Hormones like hCG, estrogen, and progesterone surge, causing many of the symptoms you're experiencing. Your blood volume is already increasing, and your uterus is beginning to expand — even if you can't see it yet.
Your baby at week 6 is the size of a Sweet pea, measuring about 0.2 in (5 mm) and weighing roughly Less than 0.04 oz. The focus is on forming all major organ systems that will sustain your baby through the rest of pregnancy and beyond.
Your Baby's Development This Week
Your baby is now the size of a sweet pea, and their tiny heart has divided into chambers — beating at about 100-160 beats per minute. The key milestone this week is that the heart divides into chambers. the jaw, cheeks, and chin begin forming.
The first trimester is a period of incredible transformation. From a single cell to a fully formed fetus in just 12 weeks — your baby's development is happening at an astonishing pace. Each week brings new organs, new abilities, and new reasons to marvel at the process.
This week's voice theme
“Faces forming, futures unfolding.”
Imagine hearing this every morning — a voice note from your baby that evolves week by week.
Hear your baby's voice →Frequently Asked Questions
Can you hear a heartbeat at 6 weeks?
Yes, a transvaginal ultrasound can often detect the heartbeat at 6 weeks.
Is severe nausea normal at 6 weeks?
Nausea varies widely. While common, severe vomiting requires medical attention.