Pain during sex

LeAnna • In love with my soulmate ✨
Okay, so I have pain during sex, but it's only when it's first going in. 
I don't have an infection, etopic pregnancy, etc.
It's almost as if something moves down my canal and has to be pushed back up. 
I have to gently slide down his dick before he can even move. 
Please helpppp. ):