I had sex on the last two days of menstrual (11.3,11.4) and 11.9, which was my last fertile day. My next period isn t until the 11.30 and all three days ejaculation inside me occured. I ve been having a lot of pregnancy symptoms: fatigue, tingling breast, heartburn with everything consumed, nausea, constipation, headaches, diziness, sense of smell, back pain, bloating, visible veina in breast and 5lb weight gain in two weeks. I know feel a small pea sized knot in my lower abdomen. Could i be pregnant?