Hi! Is it possible to get pregnant from touching something like a doorknob where there may or may not have sperm on and then masturbating (fingering)? I'm totally sure no one touched that doorknob for about 20-30 minutes before I touched it, but is it possible? Would sperm survive a trip like going from penis to hand, then to doorknob and then 20 to 30 minutes later to another hand and then to vagina?