Hi Whisper Sorry you are going through this but you have to remember your body has been through a lot in a short time. It takes time to recover from only one of these so imagine all three. I was told it takes a year for the chemo to fully get out of my system and sometimes side effect can take even longer. Try just doing a little exercise build up slowly its frustrating I know but every little step is moving in the right direction you cant just pick up where you left off. You have to accept that and try not to get frustrated as that just makes things worse. I have Osteoarthritis in my knee and know how debilitating it can be and painful. Find some gentle exercises for stretching your hands especially in the morning and evening massage is good also. You have gone through this cancer and come out the other end look on this as the start of your recovery from treatment one day at a time.