I was in a similar situation. I had lymphoma and they wanted to use the CHOP protocol, but, unfortunately, my heart wasn't strong enough (due to previous heart attacks due to previous side effects) to have the whole protocol. I had to rely on just the C-OP protocol and they said it SHOULD be enough, but no guarantee. Fortunately it was enough to put me into remission, so in my case, it did work, but it didn't erase the feelings of anxiety. Just know you are not alone! If there's anything we can do just ask. Keep on keepin' on, DPM