Pregnant from towel?

No Susan, you were completely insensitive and offensive in your comment. A young girl came to this website for advice which you could've just responded with, "Breathe easy, the sperm on the towel died long ago if your brother even had used it beforehand. No need to get paranoid about it. The soreness and sickness could be all related to anxiety and your anxiety over this situation. It's all just an over-reaction, but to prevent your anxiety in the future I'd suggest keeping your own towel in your room in case for future "you" times".

Instead you decide to throw her to psychiatry, call her obsessive, and make it out to be something that it obviously isn't. You can't get pregnant from a 10-year-old, Susan? I'm sorry, but how far does your education go? Puberty in boys can start as young as 8, and typically it begins between the ages of 9-13. So to answer YOUR ignorance, yeah it can happen.

She's obviously young, and she obviously hasn't had any sexual experience which results in why she's scared. She came looking for advice, and I hope that (since this is years after the fact) that she found it by someone who wasn't as judgmental as you.

I pray you don't give advice like your comments to other people seeking help.

I know this is years old, but I must point out how incredibly rude and judgmental your comment makes you sound, Susan, You are looking down on this person for their question when in a person with anxiety, these fixations are often a part of every day life, no matter how "troublesome" they seem to be to outside people.

I'm pretty sure it was dry or almost completely dry but now I'm so freaked out I can hardly stand it.

It is definitely 100% not possible...at least as long as the towel was dry. Sperm can only live outside the body for 20 minutes to an hour tops. Once the semen is dry the sperm is dead. So the question is, was the towel dry? You need to explain the situation fully and honestly to a dr because it could be a serious problem. However if you are still developing the tenderness in your breasts could be growing pains. And the odds of you getting pregnant while on birth control are slim. The way birth control works is it tricks your body into thinking it is already pregnant.

And if not, I'd need some advice about these painful breasts - which supposedly if they "were" fibrocystic, they pain would usually leave with the period, but it hasn't.

Is there 100% no way? I know it is an irrational question but at the same time I have all these weird things going on- extreme thirst, dizziness, nausea..(ongoing). My boobs are still hurting. I felt them and felt "lumps" in them, the nurse sent me for an ultrasound on them to see if they were fibrocystic or anything and they said there was nothing seen on the ultrasound. They have been hurting for almost a month now. I guess I am so concerned because of all the things people say on the internet, about how really strange things can happen sometimes. This is really ruining my summer, and I have talked to my mom about it but I really don't feel much better..(Because of all the "signs" I'm having).
I trust your advice but could you explain to me why this kind of thing couldn't happen? People say that if there is sperm that comes near your vagina you could get pregnant.
I really do hope I'm just over-reacting.