I'd say the chances are very slim. However, it's not impossible. Sperm doesn't necessarily die within a few minutes once it hits the air. It can actually take a few hours for it to die. Also, I guess this question doesn't specify whether the guy was actually slightly in, because if that's the case, it's still unlikely, but maybe the chances of pregnancy would be very slightly increased, but still doubtful. I'd say for the most part, you shouldn't worry, especially if it was just on your underwear. However, if you're really worrying and maybe it's caused a delay in your menstruation, maybe it'd be more of a relief for you if you got it checked out anyhow.
Technically, yes. If there is sperm on a woman's underwear and then she wears it and that sperm comes in contact with her vagina, there is a chance that it could make its way up into her uterus and impregnate her, although if she hasn't worn the underwear in a few days or she's washed it, then the sperm will all be dead, and anyway it's a really small chance that it could get her pregnant at all.
yes, you Could, it's unlikely, however the sperm could go through both panties and underwear and into the Vagina and get some one pregnant, again unlikely.
Yes. Underwear is porous enough for the semen to go through it.
If his sperm/semen comes in to contact with your vagina, you can get pregnant.
no, oxygen acts as a spermicide.
No
NO!
No. If you do not know how babies are made you should not be fooling around at all...
If she is wearing a dress and no underwear, yes. If she has underwear on, no? so basically if you have no underwear on your screwed? and you have a 50% chance?
No.
yes the girl will get pregnant if sperm gets intoher vagina
yes, there is a chance
No. If you do not know how babies are made you should not be fooling around at all...
No-unrelated.
The pros of wearing womens' underwear, if you're a boy, is that they may be more comfortable. The cons include being ridiculed by your friends in gym class.
No. Sperm cannot survive outside the body for long
The only way that would be possible is if the sperm entered into the vagina. If the underwear was moved away from the vagina at anytime that the boy ejaculated or after and the sperm entered, than yea, it is possible. If there is absolutely no way that the sperm entered the vagina, then the answer would be no. Your call, we were not there.
For a 12 year old boy, it would be most appropriate to wear boy shorts or briefs designed for boys, as they typically provide the best support and comfort for male anatomy. It's important to choose underwear that is designed for your assigned gender at birth to ensure proper fit and function.
Most likely not, but it is better to be on the safe side and take a pregnancy test to make sure, and be more careful.