Hi, I just wanted to say I hope you've gotten some answers by now and are feeling better.
It sounds to me like you have an anal fissure. The first crs I saw didn't even see mine. The second one said I should live with it. The third one did surgery on me. That was 6 weeks ago tomorrow - and I was doing okay and healing, but today I had blood with my stool. I'm very upset, to say the least.
Anyhow, I wanted to reply to you, because it didn't look like you had received any replies. You're not alone with your misery. Anyone with rectal/anal pain is miserable, I know. --- Take care, and write if you get this.