I also remember getting it looked at again, either it left and came back,
or I just forgot about it until my anxiety problems started, when I was 19
or 20. At that point my doctor even performed a mammogram to be sure it wasnt anything serious and that came back with no results, so I ignored it for a while longer.
The last month or so I've noticed it again (or it came back, again I'm not sure), after a couple years of homelessness, and not exactly living as well as I could.