Hello,
For starters the ergonomic stuff is good, but next is fixing the postures.
If it keeps getting worse I would really cut back on computer time or any repetitive /forward uses until symptoms decrease.

If you ever had any accidents, falls, hits or sports injuries , a good chiropractor might by a quicker way to get started back to best postures.

Many of us have used a rolled up large towel or foam roll/ roller ( online or at PT places usually).

Oh just found this -
the lowest photo is what the PT teacher told me that nearly everyone should be doing - to maintain & repair upper body postures -
http://simplemom.net/5-ways-to-fix-mom-posture/

If you have pain increases then do go back to a roller up towel or even flat floor or bed, use those until you can be comfortable moving up to the next level.

A stability/swiss ball will work also if you have one.
some stick figure sketches -
http://neurotalk.psychcentral.com/album.php?albumid=422

Trigger point info - sticky thread-
http://neurotalk.psychcentral.com/thread125577.html