Menstrual Symptoms: Seeking Causes and Solutions

Hello Doctor,

During the first few days of my period, I experience diarrhea, pain, nausea, and sweating. I am in my mid-30s and have had three children. For the past few years, I consistently have at least one day in the early stages of my period where I suffer from diarrhea, nausea, sweating, panic, and pain. These symptoms come in waves, starting with an urge to use the bathroom and then hitting me all at once. Once I pass a bowel movement, the symptoms subside. This cycle repeats every hour for 3-5 hours. My doctors suspect that I may have endometriosis, although I have not undergone a laparoscopy, and I do have resolving cysts. I cannot take birth control due to adverse reactions. I am seeking information about potential causes and solutions for my condition.