Am I pregnant?

Ok so I'll start this story off by saying I had my left ovary and right Fallopian tube removed in January of 2013. My doctor said that I may still be able to get pregnant the old fashion way but I would more than likely need to get IVF. I've never had regular periods I  maybe had 5 or 6 a year, except from May-September 2014 I had periods every month. I haven't had one in the past 2 months and my boobs are sore to the touch and I've been having these abnormal stomach pains. I took 2 pregnancy test that were negative. Just confused as to what could be going on.