I am concerned I might be pregnant. What I thought was my LMP was 5/30, and on 6/8, 6/10/ 6/11, 6/12 and 6/14 I had unprotected sex with my ex (semi unprotected, start without a condom, put a condom on mid way and pull out when he is going to ejaculate) on 6/18 I began to feel cramping and had a tiny bit of spotting. I