i have chronic tendonitis in both shoulders.. i had reached the point where i had to call my husband into the shower cause i couldn't get my arms up enough to get the shampoo out of my hair...
and i got lots & lots of hair...
i wound up in physical therapy for about 6 months & have a set of exercises i do with weights... supposed to do it every day.. usually do, but can sure tell if i miss more than one or two...
go get it checked out, it will feel better in the long run