Thanks for all the comments! I definitely feel more stable now that I've been off the Cymbalta for a few weeks. The myoclonic jerks/twitching are mostly gone, too. I feel more like myself again. I just feel like the Cymbalta was having a weird effect on my emotions.

My T didn't seem surprised that I was having negative effects from stopping the Cymbalta (she's not a p-doc but has been in practice many more years than my p-doc!) She also seems to agree with my theory that SNRIs (Effexor and Cymbalta) just aren't good for me. So I'm just glad I'm off it now and hoping that Zoloft/Wellbutrin will help me.