Anyone 6+ months still working a very physical job?

I will be 6 months in 2 days and I am still working a very physical job. I'm constantly lifting, bending, pushing, and pulling heavy things. At times I get lots of upper and lower abdominal pains and end up having to call out for a few days. I want to keep working a little longer so that my husband isnt left with all the bills, but at the same time I really want to quit because the risk just isn't worth it. There is a possibility of light duty at my job but the supervisors and managers are so mean and they don't care that I'm pregnant and don't seem to understand that some things I just can't do anymore. I've talked to my husband about me quitting my job but he always gets an attitude and makes it seem as if he'd rather me keep working no matter what. Any advice and is anyone going through the same thing?