Hi i had i hard pea sized lump on the left side of my anus and a bit painful if i pushed it. It is under the skin that at first i was thinking it is an internal hemorrhoids. I had this for a few months now. Just last week i noticed that there is a pus coming out and it is so painful. No redness in color noted. Can you please give me some ideas what it is? I dont have any problems in health except for this. Thank you in advance.