Honestly, I'd go to the eeoc for advice. I had a client a while back who's work was trying to get her to quit after she told them and the eeoc was super helpful. She kept her job, they provided her with information, legal support, and talked to her manager for her.
It really depends on where you worj in my opinion. If the job is worth saving and salvaging and you see yourself growing with that company I say... ny all means use all your resources to maintain employment. If not just work there until you can secure other employment with better wages but do not quit, so your job but don't work yourself up. It will all work out
I'm experiencing something similar. My bosses make me seem like such a burden. They have changed my schedule to be less desirable and made it known they did so because of my "morning sickness" that personally last all day so there is no way around it. But a good friend recently said to me " In ten years you won't be with this bank but you will be with your child." I have two week days a month off where i could go to see my obgyn and of course they are booked up those two days and my boss "didnt have ultrasounds" so this has become a big stress in my life.I'm not going to just up and quit my job but I am trying to not stress too much if I do loose it. I've never been without a job and at times have held two jobs. But this child is my main concern and not what my employer thinks I should do.
It's a labor job that causes pains in my stomach. He has told me "all I say is drama" "there are no excuses next time I call in or leave early I loose my job" I have more problems then a problem child" the current job I'm working on is causing stomach pains but I am to afraid to even open my mouth Cuz I don't wanna loose my job.
Also, how long have you worked there? Is it a large company with HR?
If they are still making you do manual labor than you need to contact your doctor for a medical slip saying otherwise. If they still don't change then I recommend contacting legal help.