<s>[INST] Could I possibly get pregnant? My boyfriend and I had sex and I think he may have came a little in me. I was on the last day of my period, or I had just stopped cause my tampon had very little blood on it. I immediately went to the bathroom and used water to try to wash myself off. There was a lot on my leg and on the bed but if any got in it must have been a very small amount. What is the likelyhood that I could possibly get pregnant? [/INST] Hello dairy understand your concerned not worthier is no chance of the pregnancy as you did sex on the last day of period. It is very safe period of the cycle. During this day there is no ovulation, so fertilization will not occur. But if some sperm concentration enter in to the vagina during the fertile phase/ovulatory phase of cycle then chance of pregnancy is high. But you are safe. Avoid stress, take healthy diet, maintain proper pelvic hygiene, do regular exercise. Use safe sex practice like condom in future to prevent the unwanted pregnancy. Hope this may help you Best regards </s>