queefing???

okay, so apparently queefing is because you have a “loose” vagina... but the person i’m having sex w/ is the only person i’ve ever had sex w/. and it only happens when we’re doing it doggystyle and i dont understand why. or how to prevent it. i know it’s normal but it’s embarrassing sometimes. when it happens we kind of just pretend it didn’t, but i know it still did so. help??