Hello. I'm sorry you don't feel well. Although it isn't possible to say for sure without an examination, the lump in the center of your chest is probably an infected epidermoid cyst
. These are benign (non-cancerous) cysts that form when epidermal cells get trapped beneath the skin surface and begin growing. Most epidermoid cysts have a small pore that communicates with the surface, which permits bacteria to get into the cyst. Applying a warm pack to this lump is all you should do until you can see your doctor, who can confirm your diagnosis and begin treatment, if necessary. (That might include antibiotics or, possibly, removal of the cyst, which is a relatively simple procedure.)
It's unlikely your other symptoms -- headaches
, shortness of breath
-- are caused by the lump on your chest. These issues are a bit more worrisome (they could be symptoms of an underlying medical problem, such as anemia
) and should be worked up as soon as possible. Your doctor can also help you with this.
I hope you feel better soon.