I know that pain that how I found out I had the cysts I was sent for a CT scan for possible appendicitis but it was a burst cyst
That's how I found out that I also had cysts - an emergency trip to the hospital in agony.

I have no idea if it's at all related to cysts - I'm apparently ignorant to most things that go on down there! - but I too will get lots of clot loss with a period. Some of them quite large and, during my last period I was tempted to go to the hospital as I thought I was losing too much and feeling quite sick and weak.

After numerous visits to doctors over the years the general consensus seems to be that it's "normal for me". I've given up trying to find out why.