I'm 32 yrs old and had an ultrasound of my breast,which showed inflamed tissue. I've been on antibiotics for four and a half days now for what my obgyn thinks is a breast infection.It started with extreme pain and then a lump developed in my right breast. The red rash that I had has gone away and the pain has decreased, but not gone completely.I still have a lump and my nipple is starting to tingle. I have had no signs like a fever, body aches or any other signs of infection.I'm not breastfeeding, I don't even have children. how long should I be on antibiotics before going back to dr? Is it resonable for me to request further testing? I have also developed pain in my back when I breathe and my spine hurts. Usually when my back hurts it's muscular but now its the actual spine. I had a pet scan done in October for something that showed up in CT of chest. They wanted to rule out lympnoma. the spot in my chest area they attributed to residual thymus tissue. Do you think I should see a breast dr or someone else? I'm so confused and do not know what to do!