Can Taking Zoloft Cause Vomiting,diarrhea And Dizziness?

wife has been having headaches for the last couple of weeks also she has been throwing up, 5 mins. ago when she went to stand up she got real light headed and fell down and couldnt stand up i tried to pick her up and assit. her to the couch. she tells me that she has been light headed for a couple of hours now i checked her raidal pulse and it is strong and diarreha for a month she has been taking zoloft for a month i think the zoloft is causing is this true?