My boyfriend and I were making out a few days ago. When I say making out we were kissing, and dry humping. I was on top of him at one point, but his penis and my vagina were not in contact. We were both fully clothed and had blankets between us. He had on a t-shirt, boxers, and pjs. I had on a t shirt, pjs, and underwear as well. Plus he had a blanket on top of him. He got really into it and ejaculated some semen. He didn't ejaculate much as it was a patch the size of the length of three fingers. However, as soon as it happened he told me to get off of him and he went and changed his clothes. Some semen seeped out from his underwear to form a wet spot on his pjs when he showed me his clothes after he got changed. However, there was no wet spots on my pjs or underwear. The time that elapsed from his ejaculation to when he told me to get off of him could have been no more than 10 seconds he said. My question is should I be concerned that I could be pregnant?