Should I get a job?

I'm 21 weeks pregnant and my other job fired me because I have a high risk pregnancy and have to go to the doctor every week. They couldn't handle me missing that much and plus it was a warehouse job where I had to walk around all day every day. I am 21 weeks and don't know what to do. I doctors appointments every week, sometimes twice if I have to go to the city for a special ultrasound. I feel stressed not having one but on the other hand is it worth it? I'm afraid by the time I find a decent job, get hired, and go through training I'll have to quit working and have the baby. I just don't know what to do.