I would talk to your supervisor again, maybe they can transfer you? If not you can try to find a job at walmart maybe, or baby stores/ maternity for now until the baby is born and then decide to find work in your field... hope the ideas help, good luck
I dont live in texas but tx22 is right; in order to qualify for unemployment, you have to get laidoff. Quitting will not qualify you for unemployment.
In Texas you can't receive unemployment if you quit so I'd look into it to be sure. . Maybe try someone higher up or another manager. . Good luck hun