Hi everyone

First time posting. I am nearly 45 and started HRT last October. I had a routine mammogram through work 18 months ago that was clear. Last week I noticed a large lump in my breast that has seemingly developed really quickly. I check every so often and have not noticed it before but this can be felt through clothes and when I just brush my hand past my breast. It is a bit tender too.

I saw the GP on Thursday and I asked if it could be a cyst or fibroadenoma and caused by HRT. I knew I would be referred to the breast clinic anyway but the GP's manner after examining me has really frightened me. She looked really worried and her hands were shaking as she typed the referral. She said it didn't feel like a cyst and was referring me on 2ww. 

Now just waiting for the appointment to come through and really panicking. I'm very fortunate that there is no history of cancer in my family and I am trying to be positive and logical about it but I am freaking out.

Has anyone else had a sudden large lump appear while taking HRT that can give me any reassurance that it might be OK? 

Thanks very much for any help and good luck to everyone going through all this stress and worry too.