I'm a little worried about the back pain I've developed late in my 2nd trimester (I'm now in 3rd). It's a dull pain under my right shoulder blade, hurts like hell to an extent that I can no longer sit on a chair or stand upright. Gets terrible in the afternoon, mornings are fine. Has anyone experienced this? Maybe I could do some stretching excercises? Any advice would be much appreciated! There is a lot of info on lower back pain but nobody seems to know about the upper one-sided kind of pain.. hmm