Question: Since March 2012 my husband and I have been trying to concieve another child. We have a 4yr old girl. In September I went into my OB ( my periods were coming every 21 days) and he put me on 50mg Chlomid. I did 2 cycles of that and then had severe abdominal pains after the 2nd round. He did an ultrasound and found a chocolate cyst on my right ovary and suspects i have endoetriosis( he did no testing to confirm this) He prescribed me to take Natazia for one month. I started that on the 1st day of my period ( oct 28th 2012) had my period for 7 days which is long for me. Last week Tues Nov 20th i was having PG symptoms like nausea, and very tender breasts. My period started on Friday and was brownish black spotting and is now done. Bleeding only lasted 3 days? Which is not normal for me. Today I feel crampy, nauseous and still my breasts are tender. Should I be buying a UPT? Or could it be side effects of the birth control?