I am an 18 yr old woman and I had sex twice in a one day with a guy about two weeks ago, it was my third day on the pill and he used a condom both times. I was wondering if I could be pregnant. I have a blood clot in my uterus already and it causes me mild cramping, so I keep stressing about whether or not the pain is pregnancy signs or from my clot. I had cramping before I had sex and then I knew I wasn't pregnant, but my left breast is sore so I'm wondering if it's a pregnancy symptom. Just the left, not both.