Well here's the story. yesterday, masturbated around 1-5pm. I just wiped out the semen. then went Outside and go back home and sleep. today, I woke up 6:30AM and take just a shower(I hurried up because I woke up late) so I just washed my hair with shampoo and that's all. I met my girlfriend about 8:30 and we jogged and hike until 10AM. then we went to my house and fingered her and I never touch my private part.
the question is: 1. is there a risk of pregnancy here? 2. does shampoo or water kill/wash away sperms?
PS: sorry about that insane question, my BIO student friends told me that sperm can live up to 3 days in human skin. they say that sperm can survive because of human heat.
Sorry you got missed for a bit. No, there is no risk of pregnancy here. You can read more about it here and if you have any other questions, feel free to come ask! As to your friend, sperm can live up to 72 hours inside a woman's body, but not on human skin. They dry up and die in about 10 minutes.
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