WARNING:TMI BUT I NEED ANSWERS

I want to have really good sex with my partner, but lately it's been sorta Vanilla sex, which sometimes I love but now I'm too insecure to go more wild anymore, and it's because when even I display any other position besides Missonary, I have the tendency to queef and I'm so insecure about it. It happens so frequently now that I'm becoming bad in bed and not put any motion in it while my partner wants me to try doggy or any other position like I once did but I can't, there were moments where I did multiple times in front of him and my confidence will drain and my mood for sex will dwindle. How do I control this? Or even stop it? I want to try all sorts of positions but it happens everytime. :c