Hi, you poor thing.
Lots of smiles go out to you. Maybe you should bring it up with your employer again. I would ask him if he has made any efforts to change things. Maybe that will put some heat on him. Also, what about contacting the health department? They may be able to help you out. There has to be a Labor law in your state that would apply to this. Maybe you could do a search on that on the net. If so, print it out and show it to your boss. And if none of this works, I would start to look for another job. You never know what could be out there for you. I know searching while pregnant isn't easy, but it may be best for the baby! Good luck to you sweetie!