Three years ago, my ob/gyn at the time gave me a 2 month supply of Ortho Tri-Cyclen Lo about 3 years ago to try and help with my irregular cycles and PMS. It did regulate my cycle but I didn't feel like it helped with some of the PMS symptoms. A year and a half later, I was seeing a new ob/gyn for my annual exam, and I was still having trouble with my irregular cycles. They were all over the place more so than ever so I discussed it with him, and he tested my thyroid and prolactin levels. The thyroid level was normal but prolactin was elevated (1st prolactin test was 40, 2nd test was 32), plus I had a brain MRI done which came back normal. I have now been on bromocriptine for almost a year now. I'm not trying to get pregnant or anything, just taking it to lower the prolactin and have regular cycles. I did a lot of online research, some sites say BCP can cause it and some don't.