I tried anal masturbation for the first time today (first time outside of water). I used my finger with a bit of lube. Enough to coat my finger but not THAT much. I only used the one finger, it hurt a lot at first and then started to feel a bit better. I took my finger out a few times and it looked fine, but the final time I took it out (after going the deepest/hardest) my finger had blood on it! I took a shower right after and put pressure water inside my anus, and I poo'd but no more blood came out. I'm worried that I cut myself since I had not cut my fingers prior to it happening, but I'm not sure. Could I have perhaps just stretched it a bit too far?
Update: I just poo'd for the first time. It was only a little, and at first it was just blood (not a lot but..) and then there was a small piece of poo that had traces of popinside it. Then I not on the toilet for a while and had another wet fart but it was just poo. It doesn't hurt but I'm still really worried.