Doctors not taking me seriously

Hi! I am new here. I am 64. A year ago my regular mammogram revealed some suspicious areas on my left breast. A sonogram revealed cysts, and I went in 6 months later for a followup. That mammogram and sonogram showed no change. Periodically my left breast has felt heavy, although there is no visible change in size. It also sometimes feels warm inside but not to the touch. I thought these symptoms were probably because of the cysts until I Googled my symptoms and found IBC. Today I went for another 6 month followup. I told the technician about my symptoms and she recorded them. We started with a regular mammogram, then a 3D on my left breast, then a 3D on my right breast, and finally a sonogram on both breasts. The result was cysts in both breasts and a recheck in a year. I then went to my gyn (NP) for my yearly physical. I discussed my tests and symptoms, and asked for a referral to a specialist. She said she felt that the symptoms were from the cyst, but would talk with my regular NP about a referral. I am scared to death. My breast does not always feel heavy or warm but I am still concerned. The NP did not seem to really know much about IBC and although I don't have any of the visual symptoms I still can't shake the dreaded feeling. Any advice/thoughts would be welcome.