early disability leave?

Jo
Has anyone ever Gone on early disability leave? I've worked for my employer for 8 years. Last year I had a miscarriage and I'm pretty sure it was the stress and labor from my current job. They put me on a short leave bc I keep cramping and bleeding while at work. But when I'm resting or outside of work I don't. My manager doesn't let me go in extra breaks and purposely stresses me out to the point I have anxiety and cry at work. She tells me I need to move fast and shouldn't be going slow. I'm 11 weeks pregnant and don't want to lose this baby. She didn't even care that I miscarried last year. I don't want to quit my job but my family says I'm able to do short term disability for a bit.  Has anyone done this?
I've also had to leave work 2 because I was bleeding and my manager didn't care about me only the coverage at the job. I did cover everything but she just says that I need to be at work to run the business. I've never had issues with her before getting pregnant.
And I have Drs notes for when I've left also. I never call out of work.