**TMI** QUEEFING HELP

Hey girls I'm in desperate need of some help. When I was with my previous partner I had a problem with queefing when I was on top or in doggy position. Now I've got a new partner and we're ready for the next step but I REALLY don't wanna queef again because it was embarrassing as hell the first time, even when I'd been with him for ages.
I just really wanna impress this guy and go in so many positions but I can't. How can I prevent queefing?