I have been on Portia birth control since December.I've ever missed a pill. On May 3, I had penis-vaginal contact with no condom, but also no ejaculation. My period was due May 14 and came on time, with heavy bleeding/clots/cramping on the first two days, and then tapered off for the last three, maybe a little sooner than usual. On the last day, I had brown discharge/blood. But today I have some red spotting. Is this normal? Could I be pregnant? Please help