Anyone else? Need tips!!

Okay, so when my man and I are having sex, when I’m on top riding him, I get like this sensation that I have to poop, and when I do, I slow down a little so the feeling isn’t as bad. Also, he gets really deep when I’m on top, and it kinda hurts, and he’ll like grab my hips when I’m on top, pull me down as far as possible on to him so he gets even deeper in me, and then he’ll like move his hips in a circle so he’s moving in circles in me, and that hurts but kinda feels good at the same time. So I just wanna know if anyone else is like this or is it just me or something wrong with me?? I overthink everything even when it comes to our sex life, lol.