My job is making me sick. Idk what to do

I’ve been working at a photo studio for over a month now and have been sick every week since starting. I’ve had a kidney infection, virus cold, migraines with vertigo and another uti infection. All in one month! I definitely think it’s stress from this job. Also a lack of eating/drinking from working so much. The job is hard on my body, it’s a toxic work environment and understaffed. I have chronic health problems so 40+ hours is harder for me than most. I’m a recent college grad and need to work but haven’t found anything else. Any suggestions??? Advice? I’m tired of being sick every week 😞