Brief Answer:
It may be a fissure or haemorrhoid
Detailed Answer:
Hi,
Thanks for writing to XXXXXXX This is Dr. Ashish Verma, a
general surgeon, answering to your query.
It can either be an
anal fissure, if you are passing hard stools in the past days. And the thing you felt might be a skin tag, formed by previous healed fissure.
Another, more likely, possibility is that, it may be a
hemorrhoid (piles), and the thing you are feeling is the prolapsed part of it.
For both you need to visit a surgeon, as they can be distinguished by physical examination only, and by proctoscopy.
Both are treatable, but treatment of both is different, so proper diagnosis is a must before that.
Hope i have answered to all your queries. If you have further queries, i will be glad to answer them.
Regards
Dr. Ashish Verma