I recently had peritonitis and as a result an appendectomy. I have been on Birth Control (ortho tricyclene lo) for 3 years. I did have my period on time the day after my surgery. However the following weekend on my first week of a new pack, i missed 2 pills and had intercourse. However it was not unprotected and there were no close calls. I ended up getting my period again the day i caught up on my pills, and it was slightly heavier than a normal period and lasted 8 days instead of my normal 4. I continued my pack as usual and got my period normally heavy and it lasted 4 days as usual. Lately I have been having some weird pain in my abs. It has been about 5 weeks now since my surgery, and could maybe be still healing. Could I be pregnant if I got my period twice in a month, heavy and basically on time?