Tmi: Vagina Tearing💔

Amanda • 25, married, and first pregnancy! 💕
So this is super tmi but every time my boyfriend and I have sex, the skin right behind my vagina tears( in between vagina and butt). I try to only do certain positions but I want to be able to do others and not have it tear. It hurts and sometimes makes it not enjoyable. Any ideas? Is this something that's common or just me?Â