When my doctor prescribed me fluoxetine, he said there was no chance of it making me nauseous or making me vomit. The starting dose is 10mg, (By breaking the tablet in half).

I did try sertraline 50mg a few years ago. and I had a headache along with nausea. I had to stop taking it after 5 days.
I have considered breaking the tablet into a quarter, making is 5mg. But I'm not sure if that will help.

I know it's a low dose, but I'm worried that because it's a different medication it might make me vomit, which is my main worry.
I really don't know what to do.