Thank you for the query.
It is hard to tell what are this bumps not seeing them. It can be hair follicles inflammation, some kind of rash
due to medicines you have been using. Anal fissure
is often associated with a bump (called sentinel node).
What you should know for sure is that chronic fissure (which lasts longer than 6 weeks) wont heal by itself. Usually surgery is necessary. That is why I suggest you to do not treat it by yourself and consult proctologist
Hope this will help.