high temperatures while pregnant?

I work at a restaurant where I will more than likely be cooking than taking orders. It gets REALLY hot in the entire restaurant as it’s a pretty small area and our A/C sucks. So on an average day, it’ll be 85 - 90 degrees inside. I have to go back to work on Friday, and I’m pregnant. I’m concerned about my body temperature being elevated for 4 to 5 hours.

Is it safe for the baby? How hot does your body really get in such an environment? Should I find a different line of work?

I’m just worried any answers will be helpful, thanks.