Please get a mammogram and breast exam immediately!!!!
I had a lump that I thought was a cyst, since I have dense breasts and a history of cyst problems. It started to get larger and I found a breast care program sponsered by the state. Many states have similar programs for the uninsured.
Bottom line - DO IT NOW! My lump was cancer and it was quite advanced. I skipped one mammogram due to no insurance or it could have been found earlier.
Luckily for me, I am still here to answer your question, but it has been very hard. Thankfully I persued a program for the uninsured and got help.
Good luck to you!