orgasm from anal? ⚠️

Okay so, me and I guess you can say FWB (friends w. benefits) just had sex for like the second time, and like the first time, he stuck it in my butt .. so I have a few questions about anal in general .. he was literally POUNDING my butt and I felt the urge to pee, yet I didn’t know if it was me getting ready to squirt or anything 😭😭 I didn’t know which it would be, so I told him I needed a break 🤦🏾‍♀️ can you squirt from anal ? or did I just have to pee ?? next question, does it always hurt the first 2 minutes? And like, is there anyway to prevent like poop coming out ? I never clean myself before I go over there because I knew was expecting anal !! I think both times, it was a little bit of crap on the condom..