Taylor,
Personally, if a drug makes me feel horrible on the first or second try - I will stop immediately and go back to the doc and tell him my symptoms and tell him I cannot take that particular med and to try me on another one. With
Zoloft and
Effexor I had similar horrible symptoms after just one pill. Zoloft gave me instense anxiety and heart palpitations. Effexor made me feel horrible - in an unreal state of depression - and like I was walking through this heaviness. On the other hand, an SSRI, like
Lexapro, made me feel better right away. The only symptoms I had were nausea, gas and diarrhea for the first week and then it went away. It also helped me sleep. You may be on the wrong med for you. It may be a matter of trying a few different classes of antidepressant until you find the one that will work for you. Let your doctor or a psychiatrist be you guide. Good luck.
Jenna