Is Boils In Breast And Fatty Tumor On Neck Is Related?

I get like boils in my right breast. You can't see evidence of one , you can just feel it deep inside like the pimples on my face, before they would come to a head, when I was a teenager, I am now 53 yrs old, weigh about 145 lbs and am 5' 1". My doctor gave me a real strong antibioctic and 2 penicillen shots. It still came to a head evidentily and bursted while I was asleep, right next to my nipple and left a scar about the size of a nickle. He also told me to stop wearing underwire bras. If I where a bra that is to tight or get hit or bumped hard one of those things will form in my breast. They are the most painful constant throbbing and also the nipple stays erect constantly. My doctor had never seen anything like this when it bursted and actual said it was mastites but I hadn't nursed for 12 years. Do you know what this is that I have, and what I can do about curing it ?, or preventive measures and special diet etc? I am healthy and only been hospitalize when I broke my feemer and had my son. I do have a fatty tumor on my right side of neck on the spine about the size of a egg yolk and one on my left side next to the shoulder blade, I have not seen a doctor for. The one on my neck I've had for 10 yrs and is now making ti painful to turn my head to the right and the one on my back I just noticed a couple days ago. Could they be related ?