What Course Of Treatment Should Be Done For Depression, Anxiety Disorder And Post Traumatic Stress Disorder?

I am a 70 year old female and have diagnoses of major depression, PTSD, generalized anxiety disorder illnesses, plus several physical illnesses. I was gradually removed from cymbalta, due to side effects, by the psychiatrist i am seeing. Gradually taking vibryd but became more ill while taking it. Stopped taking all vibryd, and then stopped lorazepam. I have been very ill, physically, since that time (some nausea,which is lessening); diarrhea after meals (not eating much or regularly, not hungry); not sleeping, but that is improving gradually, but have terrible rls, which I take med for, in early morning hours every night. I am wondering if I should see my family practice doctor, go see my psychiatrist, or who; or just tough it out. It has been 6 was from beginning of withdrawal from cymbalta. I am also very tired when I try to do a short time of Christmas shopping, going to see family, etc (5 hrs excursions). Thank you for any advice you can give me on how to proceed.