Zoloft Rapid Heart Rate, Anxiety, Medication, Extreme Stress, Profuse Sweating

I can't believe how easily they hand out this medication!
I have been under extreme stress recently and have physically been suffering from the anxiety. Went to the ER when my doctor wouldnt see me and they gave me this medication. I took one pill(50mg) at 4pm, felt slightly off, hardly enough to really notice though. However the next morning I was waken up at 5am heaving and wretching, that continued for about an hour. Then the symptoms progressed to rapid heart rate and profuse sweating during the wretching. Continued to worsen, my head felt as though I had drank 3 bottles of wine the night before(hadn't drank at all). I was dizzy and the last thing to happen was my arms and hands began to tingle and go numb. Eventually(4hours later) all symptoms had worn off and only the nausea remained. Have not touched the stuff again. I'll take the anxiety thanks.