So i lost my virginity about a week ago and ive had sex twice since. Its good but my penis comes out sometimes and it can be annoying. Its not huge, about 5 1/2 inches, and we do missionary position. It doesnt happen much, if she doesnt move its fine but she moves her hips when shes enjoying it and it kind of goes "out of sync" and then it comes out and i have to put it in again. Is there a way to stop this? Or should we try a different position.