Bursitis=very little knitting

I don't know if I slept wrong last night or what, but today my arms ached. My shoulders, my right shoulder, has a tendency for bursitis. Lifting weights has helped, but I've not lifted for about 3 weeks and tonight my right arm is aching. I'd hoped to cast on for a sweater out of the tivoli yarn I found on ebay. Love the yarn, hopefully will love the sweater....not enjoying the forced rest. Ug!! Motrin has brought the ache to merely dull, it's kind of on the hairy edge so I'm afraid to push it much. So that is the knitting content for tonight....me....whining.