Hi there, for about a week I have experienced a small amount of irritation around my anus and I was unsure what it was and thought that it was possible just possible general irritation or chafing. However, today I have found out that there is a small pea sized lump on my anus. This  lump is relatively painless to touch and I have no noticeable pain when passing stools. I also have no discomfort when sitting. However, my anus has felt slightly itchy and uncomfortable in a way.  I am extremely worried about this and im only 21 and feeling the stress from university. Can you help?