It is very common for the abdomen to become enlarged during ovulation, but it may also cause some discomfort.

However, in some cases, a woman's belly may become enlarged, especially in the later days of ovulation. This can be due to a number of factors, including:

1. Uterine growth: During the ovulation period, a woman’s uterus usually grows and expands to adapt to the new environment and prepare for the arrival of the fetus.

2. Implantation of the fertilized egg: When the fertilized egg implants, women may experience some discomfort, including an enlarged abdomen. This is because the fertilized egg implants in the uterus, causing the uterus to contract and the abdomen to become larger.

3. Hormonal changes: During ovulation, a woman’s hormonal levels change, causing her abdomen to become enlarged. This is because changes in hormonal levels may cause the uterus to contract, causing the abdomen to grow larger.

While an enlarged belly may be a normal part of ovulation, talk to your doctor if you experience discomfort or pain. Your doctor may recommend tests to determine if other health problems are present and provide appropriate treatment.