I'm not Reaaaalllly worried about this, but I just can't get it out of my mind, a few weeks ago my boyfriend and I had outercourse/dry jumping. We were only in our underwear, I was pretty wet and he had a few spots of pre-ejaculation/precum on his underwear. So my questios are, is there in any way possible or chance that it could get through my underwear or both enough To get in and get me pregnant? Also he poked his underwear covered penis around my underwear covered vagina, could that also be bad? Does it matter the thickness or thinness of the underwear at all? I'm not very worried because ive talked to my mom about this and she said that ejaculate only live outside of the body for a couple of seconds/minutes because it's not the right temperature for them to be living in because they need a warm environment, the vagina. She also said that precum or even sperm cannot get through underwear and that it's not very strong at all, is she right about all of this?