Too much work

Is anyone experiencing your managers giving you a ton to do where you literally feel like you're suffocating in work? My job is very low staffed. I have expressed my fears because of my autoimmune and my mom's history of pregnancy loss. I'm 6 weeks pregnant and I'm petrified of working too much it hurts me or the baby. We are trying to wait til 8 weeks to go in and get our first appointment. My managers really don't care until I get that first appointment because they can't know if I'm high risk until then 🙄 should I get a better job that takes care of their workers? I've been miserable at this job for a long time and being pregnant just makes that worse. Please if you have anything give me advice.