I have not been on birth control for 10 yrs. And has had normal cycles. I recently had sex 3 days before ovulation and 1 day of all in which my boyfriend released in me. The first week after I had extreme nausea. 3 days ago I went to the bathroom and wiped light bright blood and that was it. Last night I had brownish discharge, this morning I have cramping and light bright bleeding. All this is 7 days after ovulation(which was almost none existing from normal) and a week before I'm suppose to start. Could I be pregnant?