Hi and welcome to the best place for answers and support.

I too get chest pain, and have fibro along with the MG, I was in my 20's when I was DXed and I had a Thymectomy and I am glad I did because I ended up going into remisssion for 17 years. The scar fades away in time, at first }because I was so young} I too worried about what the scar would do to my looks, but than I realised it was my badge of honor, my badge of survival.

I am super sensitive to medications so the only thing I take is the mestinon, and I rest when needed. I know it puts a big damper in plans at times but I am alive and happy.

I don't have to use oxygen although there are times when I wish I had it