Ugh. Hope you feel better soon. Are you seeing a PT? (If not, I'd definitely ask for a referral!)
I've read a few times lately that contrary to what they used to teach us, it's good to keep doing weights with the uninjured arm - by keeping the neuromuscular pathways open, it actually maintains strength in the injured arm. Obviously you'd have to keep it low weight/high rep to avoid stressing the pelvis with your core muscles.
Now, I've only read that in laypersons' publications and haven't bothered to track down the research. But something to think/ask your PT about.
(((((((Emily)))))))
Speed comes from what you put behind you. - Judi Ketteler