Hi, I have ovarian cysts and I totally understand what you are going through. I have the diarrhea thing and it is disgusting. Sorry for being so directly honest. But I am in agony for several days during my period. My symptoms are upset stomach, bloating (feel like air is trapped in my stomach) pelvic pain, and nausea.. The nausea is so bad, especially when I am doing the diarrhea. Sometimes it looks like popcorn floating in the toilet....I also have a lot of burping that I just can't stop.
If the cyst is quite large, it could cause some bowel symptoms. Mine caused pressure and a constant feeling of needing to go. However, I had more constipation than diarrhea. How large is the cyst?