Oh my, I do so hope that you begin to feel better sooner. #1 - never, ever do marathon knitting sessions! it's very, very important that you stop and stretch, etc.
I have recently been diagnosed with carpal tunnel and elbow injuries from 20+ years of being on & off of crutches. BUT, PRAISE GOD, my doc is handling this thru therapy and putting off surgeries as long as possible bc it would interfere with my walking (crutches & walker). Anyway...it's very, very important that you stretch before you begin, that you knit for a few minutes, stop, get up and walk around. you can google exercises and find many, for example some of these
may be helpful. Deep tissue massage is also very beneficial, as is heat, paraffin wax baths like those seen in nail salons are wonderful, my occupational therapist highly recommends them. She also stated that the most important thing to do is to listen to your body and if you are doing something and you begin to hurt -STOP whatever you are doing and stretch, etc. As I've said earlier with hands & wrists, stretch, heat & exercise and RELAX and have fun!
i know knitting is FUN, but no marathon knitting sessions...I, too, learned this the hard way!
Good luck, hope you are feeling LOTS better!