I was taking Letrozole for about one year for metastatic ovarian cancer, but had substantial side effects from it, so I discontinued it on my own. Recently however, my GP ran an inhibin B test which they were using as my tumor marker and it was really high. My GP has referred me to a new OB/GYN Oncologist that I'll see at the end of the month. I will let you know if I'm put back on an aromatase inhibitor again. I don't want to wait until it may be too late for a treatment regardless of side effects. Best wishes to you in the future and for the success you have had with your treatment.