I'm 21 female. I have pcos for the past 7 years. I have irregular periods and immense pain during periods also my periods continue for 4-5 months if I don't take medicines. My last period occurred for 5 months so the doctor prescribed me regestrone and I have been on it for 4 months now and then I had my period after 4 months and so I stopped regestrone. The pain was as usual way too much so I took a trapic mf and I saw a very large blood clot with little white tissues in the side of it. I normally have blood clots but this was nearly equal to size of 3 golf balls. Was the large blood clot for regestrone? Also i'm on lupiheme and zindee.