Hi, I Am Suffering From A Heart Problem For Which

Hi, I am suffering from a heart problem for which I was treated through PTMC(Percutaneous Transvenous Mitral Commissurotomy), twice.
My doctor has advised me to take 1 benzibiotic injection in a month and they have told me to use it throughout the life. It's very painful to take this injection and now it's not possible for me to bear this pain anymore. Can you please suggest some alternate way? Is there any natural product or natural process which could help me to avoid the mitral valve thickening and get rid of taking such hard injections. I am really worried and need your suggestions. Please help me to get rid of this treatment please.