Torn Rotator cuff

So shoulder has been achy hurting for a while and finally got to the point that I wanted to take some Ibuprofen for it.  Decided it was time to go to the Doctor and figure out what was going on and how to fix it.  He did this lovely little test where you hold your arm out to the side at shoulder height, and then he pushes down.  I guess if you scream or yelp it proves that you might have a problem, yes I kind of did that!  That quick blast of pain surprised me.  Dear me!  Referred now on to an Orthopedic specialist to see what step comes next.  From what I have now read it is common for  a "degenerative tear in the rotator cuff of the dominant side"  translated meaning: the arm I do pretty much everything with, is the one that is having a problem.  Will be doing some creative teaching in order not to be writing on the board so much!  Thank goodness for technology, nothing like something to inspire me to use it more.