Hi Jen,
As they say, on SSRIs you will normally either lose or gain weight
during the initial stages. There are some metabolic things going on
and also its how you react to anxiety. It can even be a reaction to
feeling better, depending on how you felt before.
Its common with SSRIs, especially prozac and zoloft (though some
people get it on luvox and paxil and pretty much any ssri) to get the
jitters. This feeling can make people extremely anxious and
sometimes it also comes with nausea or a general loss of apetite.
This symptom normally goes within 4-6 weeks, but you might want to
talk with your doc if it doesnt go soon. Some people just dont suit a
particular ssri, and in those cases the dr will normally change you over
to another type.