hi there I had unprotected sex with my partner and it was 3 days after I had stopped taking the pill around 5 days after having sex I felt extremely exhausted when I went to bed I had stomach cramps and brown spotting which later turned pink this did not even last the whole day about 4 days after that I got my period which lasted about a day even though it was a week before my expected period, I have since had sore breasts and nausea. I am confused If I am pregnant or is it the pill? please help