I was put on Sertraline a few months ago. I started at 1/2 a tablet (so 25mg) as I always seem to struggle with side effects from most meds.
After about 1 week the nausea was horrendous, but then the anxiety hit. It got quite bad and I actually had a couple of panic attacks.
My GP asked me to persevere, and gave me a very low dose of Lorazepam, just in case of another panic attack. I only had to use it once.
After about Day 17 I suddenly turned the corner. I felt absolutely fine. In fact, I havent felt this good in years. No more anxiety or nausea. And the problems I originally went on it for have also been solved.
I just had to tweak the time of day I take it, as it did give me insomnia at first.
I have stayed at a low dose as I dont need to increase.
So, if at all possible, I would suggest you try and persevere with it for a few weeks. I'm so glad I did.
Best of luck. xx