Why do i keep getting sick when i am on my menstrual which i have every two to three weeks and is this normal. i am 39yrs.

Irregular periods: Irregular periods are one of the most common problems obgyns treat. If this is one time problem it usually resolves on its own. If this is a recurring problem you should be evaluated. Infections ; hormonal changes can cause spotting. There are many options available to help regulate the menstrual cycle. Schedule a visit. A gastroenterologist may be helpful if by "sick" you mean nausea.