I think it understandable why you've developed health anxiety, especially after the loss of your friend. I many of us start to worry when we have health issues. Have you considered having health anxiety therapy, since your concerns have gone on quite a while?
Sherri1974, you were only took HRT on off for two years, It really not that long. (My mother took hrt to for ten years.)
You've probably heard of Claire Week's 'Self Help for Your Nerves'. In the book the author reminds people to let time pass. If you've never read the book you probably can find a free pdf.
When I had breast pain issues my GP told me to resist over-checking, as it can make the area tender.
I hope it has all improved.