Pain in certain sex positions

Okay HELP!! Basically whenever I go into certain positions e.g the reverse cowgirl, legs over his shoulders or even doggy style I get this weird pain when he hits that specific spot and it feels like I’m bursting for the toilet suddenly (you know when you’ve been holding it in for way too long kind of feel). It’s not like he has a 9inch penis, so he can’t be hitting against my bladder right? Or is it just going deeper than normal...

Is it normal that some positions hurt.. Bc the reverse cowgirl’s is a position with my name on it!!😂🤕🤕