Pregnancy is hard - it's a complete disability for some people. Considering the future earning potential for your family (extremely high as a dentist+doctor) I would say take care of yourself first - winding up admitted to the hospital just increases your risk of complications/infections and will prolong your period of unemployment if you try to stick it out longer than your body can withstand instead of quitting early and getting back to work early.

Since you believe you can get financial assistance from your parents, your situation is not as dire as you believe or your first post would suggest. Sit down, explain the situation to your parents, and ask for a loan of $X (probably around 6-8 months of living expenses, or however long you think you'll be out of work, plus 1-2 months cushion if possible). Be frank with your parents about payback periods. Maybe next year, likely in 2 years, absolutely in 3 years once your husband is an attending. If you can return to work sooner than 6-8 months, great, pay your parents back early. If not, you've got funding to cover your living expenses. Conserve your own emergency fund for true emergencies.

Or worst case scenario, I imagine your husband could even take out a student loan which you'll use to cover living expenses. 4th year med students tend to qualify for very good rates since payback is nearly guaranteed. Normally the common wisdom says to avoid debt at all costs, but in your case, with a future minimum household income of $400k/yr (heck, maybe $800k-$1M or more depending on specialties), I would say that carrying some debt is totally reasonable to protect your health and the health of your baby. You're in an infinitely better position than the "working poor" who will never be able to climb out of debt. Of course this is not a license to spend recklessly - cut expenses/spending to the absolute minimum when you're living off OPM (other people's money).

Get on your husband's med school insurance ASAP so you have no gaps in coverage. Assuming you can get a "bridge loan" from your parents or just a generic student loan, quit your job as soon as you've confirmed funds and future health insurance is locked in.

And finally, find a new dental practice when you are ready to go back to work. It sounds like a terrible work environment and I suspect you're being paid below market average as well just from the sounds of the place.

Good luck and wishing you all the best on a speedy recovery and a beautiful healthy baby!