Hi, guys! So, silly question... I always wash my hands before masturbating, but this time, between washing hands and doing my business, I touched my bedroom's doorknob with the hand I use for masturbating. After finishing, I cought myself thinking: what if my brother had touched that doorknob with semen on his hand before I touched it? All I know for sure is that no one was in my room for at least half an hour before that, and I'd have noticed if there was something really wet on the doorknob. Anyways, do you guys think there's a risk of getting pregnant? Would sperm survive such trip as going from penis, then to hand, then to doorknob, then half an hour later to my hand and THEN to my vagina?