Hey guys, opinions on Zoloft?

I had Prozac before, but since I don’t recall if it worked or not - they want to start me on 25 mg of Zoloft, then up to 50. I’m worried about all of the negative side effects though. I’m already nauseous a lot so the GI side effects probably worry me the most lol. Can you guys give me your input/opinions on it? Thank you!