I had sex with my girlfriend last night and I sperm inside her and when we was done I wipe us off with a towel and my penis was wet on tip of it and stuff after we got done. So after sex she had me drag her off bed and she told me her underwear boxer is wet when it was dry and there no water on the floor either is that a sign of sperm releasing the rest of semen and a sign of pregnancy starting to happen soon?