It could be a fissure, I've had one. They are very painful and can cause bleeding. I've been battling it for almost a year.. the docs usually give a hydrocortisone suppository to use twice a day. When that didn't work for me, they gave me nifedipine (nitro) paste to use.. that helped some, but mine won't heal and they are talking about doing surgery to fix it. I can remember the exact moment when i developed mine.. I was having a lot of problems with constipation.. ugh horrible!! Maybe you can try to soften your stools with something like colace (sold at a drug store otc). Maybe whatever is there will heal if you don't have to strain to move your bowels..
At any rate.. GOOD LUCK!! :wave: