I started this pill about 2 months ago when my gyn told me I had ...

I started this pill about 2 months ago when my gyn told me I had endometriosis, and said this could help. I received both of my periods on time, but this pill was driving me crazy the first month with nausea, and abdominal pain, and the second month my breasts started to change, meaning in appearance, and are now really sensitive. I felt so strange that I took a pregnancy test but it was once again negative. This pill is awful, and I believe it gave me a urinary tract infection which I haven't had sense I was a child