My daughter was put on Zoloft because she too had a fear of throwing up; though we still don't know the source of that fear, it is common; so don't worry a lot. I want you girls to really check out the side effects of Zoloft because the doctors told us everything would be fine....today my daughter, 21, has horrible effects caused by Zoloft such as an uncrontrollable urge to drink massive amounts of alcohol and cutting herself and aggression...it landed her in jail this week. I initially just thought she had a drinking problem but after researching these side effects, her behavior is due to the Zoloft; so please research thouroughly and ask your family to watch for anything unusual in your behavior because you won't really understand it yourself..my daughter is a funny sweet girl under normal circumstances; now she has been in two mental wards and two rehabs and finally in jail, and it took all of that for me to realize it was the zoloft not just the alcohol. check the webistes under zoloft side effects and zoloft and alcohol. I wish you both luck. My mother takes zoloft and is just fine, but my daughter was affected adversely; so be aware and informed. Dear worry a lot lots of young people develop odd fears while growing up..don't worry one day they will go away. My brittany is tortured by the fear of throwing up. I know how scarey it is for you, but you will most likely not throw up and if for some reason you did...you will see that all that worrying was for nothing because you will survive. Take care and research zoloft completely, please