Your belly button could hurt for various reasons, some involving nearby organs. The pain might stem from acute (short-lived) issues like constipation or indigestion. Serious causes could include ...
Some women are even misdiagnosed with appendicitis during ovulation because of the extreme pain A lack of knowledge around ovulation and stomach pain isn’t because you happened to miss that sex ...
This may be an umbilical hernia, meaning the area around the navel sticks out because of weak muscles around the belly button. This never causes pain nor trouble, and it often goes away on its own.