The pregnancy line on the stomach, known as the linea nigra, typically appears during the second trimester of pregnancy. Most women notice it around the fourth or fifth month (about 20 weeks), though it can appear earlier or later depending on the individual. This dark vertical line usually runs from the belly button down to the pubic area and is caused by hormonal changes that increase melanin production in the skin. The linea nigra is a normal and harmless sign of pregnancy and tends to be more visible in women with darker skin tones. It usually fades gradually after childbirth, as hormone levels return to normal, often disappearing within a few weeks to up to a year postpartum. In summary:
- Appearance: Usually in the second trimester (~4th or 5th month)
- Cause: Hormonal changes increasing melanin production
- Location: Vertical line from belly button to pubic area
- Duration: Fades after childbirth, time varies by individual
This line is completely normal and harmless during pregnancy.
