I had a number of corpus luteum cysts also, biggest one was 5cmx4cm

I was told that they are nothing to worry about - they are a naturally occurring cyst which can happen, and have something to do with ovulation?? But that they are *usually* absorbed/expelled when you have your AF. I had a couple when I got pg, and still took my aspirin and progesterone. Oh - I was also on 5mg folic acid (the usual is 800mcg, so over 6 times the strength) which I got on prescription - same with the aspirin, I think it was 75mg that I was on??