I have an open wound that doesn't heal. what should i do? i had anal sex with my boyfriend. after several times i noticed i was bleeding and i had a cut in my anus. it has been a month now and the cut (wound) has not heel and it hurts when i have to go t

You : You should see your doctor and have an exam to make sure it is just a small tear and not something more concerning such as an infected tear or an std like warts or herpes. In the meantime, make sure you are well-hydrated and eating plenty of fiber because constipation with hard stool can cause the tear to continue reopening.

See a doctor: I'd recommend you see a proctologist to have this evaluated. This is not an atypical story that you are giving here. It can definitely be cared for appropriately and brought to heal appropriately.