Can you change your sitting position? Keyboard? Mouse? I find sitting closer helps because then I don't have to extend my arms.

It also helps for me to have a stack of books on the symptomatic side to prop my arm on in order to raise shoulder girdle to open up that area. I do the same thing when watching TV.

What kind of computer work do you do? If there is a lot of writing, emails, chats, etc. then Dragon Naturally Speaking is for you.

Another thing that helps is getting up when symptoms start and doing some Brugger, pec minor, scalene stretch, rib adjustment, etc. Then I can return.

HTH.