This medicine is making me very sick, generic for prozac...?!

Hey im 16 year old girl, just started taking fluoxetine about 4 weeks ago for anxiety & depression. The first week it just made me very sleepy & then didn't really do anything for the 2nd week. The last 2 weeks i've been feeling very sick sometimes, usually at night (i take my pill at 3:10 p.m.). All of my new symptoms are...nausea, brutal diarreah lol, stomache pain, weakness, (i slept about 20 hrs today), and i forgot the rest but those are the main ones. I feel better mentally but i don't think i want to stay on this medication it's overwhelming sometimes how sick i get (usually feel better after i crap...but i don't right now lol) sorry this is gross.

Should i start getting off of this & change to something else? Also the doctor put me on xanax-also made me sick, I think from rebound anxiety but i can't take it.