Understanding biopsy results - long standing inflammation?

Hello:

About 5 months ago I woke up to a swollen, very painful, right breast. I was nursing at the time and traveling so I assumed it was a clogged duct or mastitis and called my doctor's office; they prescribed an antibiotic but told me to come in if it didn't feel better in 3 days. It didn't so I went in, the doctor said she didn't suspect mastitis since I had no fever and no redness. She noted the difference in size of the breast and sent me for an ultrasound, which was normal. I finished the antibiotic and a couple of weeks later went back in because I had no relief from the symptoms.  Again, perplexed, she sent me to a BS for a biopsy.  The BS did not do the biopsy because I was still nursing and told me nusring is the cause of the pain, swelling, and noted thickness in the breast. She told me to take Vitamin E, see a lactation consultant and relax.  I felt very dismissed, and emailed her asking if we could instead do an MRI and asked specifically about IBC. She said she has seen IBC and because I don't have redness I can't have IBC.  She did not order the MRI because I was nursing and instead ordered a mammogram which was clear. 

Several weeks later I was still in pain so I saw my OB/GYN, she seemed confident the problem was yeast mastitis and perscribed an anti-fungal to take for 6 weeks. I noticed a slight decrease in swelling but she said I shouldn't expect pain relief and I didn't. I finished that, and also weaned the baby and within a week my breast blew back up and pain increased.  So, back to the doc I go...new antibiotic, suspicion of an abcess and/or clogged duct, and/or mastitis (though doc said, I have no fever and doesn't look like either).  After 8 days on antibiotic, no change. So, I go to a new BS who does a core needle biopsy in one of the places of pain; he noted the swelling and the difference in density of the breast that is tender but said he knows IBC and this is not it.  When I asked what it was, he said likely an infection, and I asked why then aren't the antibiotics working, fever, etc. He said sometimes they just don't.  

So, I heard back on the biopsy results, they are benign with evidence of "long standing inflammation."  I have a call into him to see what that means, but I was curious to know if anyone here had similiar results.  Again, I have swelling, dense breast, pain/tingling in the nipple, chnage in size and color to nipple, pain in breast, armpit, collarbone, and shoulder; and areas of increased tenderness. I suspect peau d'organce on the nipple, but it could be just the nipple?

I know I am being sensitive, my mother was diagnosed with stage 4 colon cancer at 47, and we lost her 8 years later. She told me to vigiliant about my health as she wished she could have caught things earlier.  I am 34, 35 next month. 

Thank you for reading this long post, any advice would be appreciated in terms of understanding what to do next. After 5 months, 7 docs, 3 tests, and 3 antibiotics I am feeling a little weary and crazy.