I'm so sorry to say this but your condition can only be hemorrhoid or anal cancer :( You said there's no blood. I hope you don't have these symptoms of anal cancer:
-anal pain, especially after a bowel movement
-anal itching
-anal bleeding or discharge
-change in bowel habits
-weakness or tiredness (due to a low blood count)
-bloody bowel movements
-buttock or perineal pain
-a feeling of not being done after bowel movement
Please keep me updated.