Reflexes appear — tiny fingers can curl
Baby this week: about 5.4 cm — crown to rump · about 14 g
≈ 5.4 cm — about the size of a lime
Illustration enlarged for clarity — the amber marker shows true relative size
Your baby this week
- Basic reflexes appear, including fingers and toes that can curl
- The intestines, which briefly developed inside the umbilical cord, move into the abdomen
- The fetus's face is looking increasingly human, with a defined profile
- Most major organs are now formed and will spend the rest of the pregnancy maturing
Your body this week
- The risk of miscarriage drops notably after this point, which brings relief for many
- The uterus is now about the size of a grapefruit and may be felt just above the pelvic bone
This week's tip: The end of the first trimester is a common time to share pregnancy news, though there's no right time — do what feels comfortable for you.
When to get help now
Call emergency services now or go to an emergency department now if you have sudden, severe tummy pain, pain in the tip of your shoulder, feel very weak, faint or dizzy, or have heavy bleeding that soaks a pad soon after putting it on. For lighter bleeding or spotting, or pain low down on one side, contact your doctor, maternity unit or an early pregnancy unit today.
Sizes and milestones are typical ranges — every pregnancy runs on its own clock. Educational content; your prenatal care team's guidance always comes first.