Okay so I realize this might sound dumb or weird but I am still pretty new to this. I tried anal sex last week for the second time ever. It was great, I enjoyed it very much. A lot of new sensations and feelings, most of them felt good. However, there was one feeling and I'm not sure what it was. I'm not so good with words but basically I felt a pressure and want to release from my dick. At first I thought I was going to cum, but I had read that it is rare to cum from anal sex alone. Also it didn't feel like any time I'd ever climaxed before. It was akin to the feeling of needing to pee. I wasn't sure if he wasn't maybe hitting something, or there was pressure on something causing my body to want to pee. I didn't know what it was so I just requested a bit of breather as I was afraid to just let whatever happen. I'm not sure if this feeling is just a natural part of the process and something to get use to or if it was an indication of something else like cumming or peeing. I hope this makes sense and somebody might enlighten me.