How how long does vertigo last in pregnant women? How do I treat it?

I'm 19 and 33 weeks into my pregnancy currently. About 3 days ago I started experiencing a spinning sensation followed by severe nausea and vomiting. I am unable to walk correctly and have major balance problems. The effects of the constant spinning have not subsided for 2 days straight. I went to UMC and Southern hills emergency rooms to no avail. Visited my obgyn today to find out I had vertigo. I'm scared and confused, never had any health issues in my life besides maybe a stomach flu or two. I can't leave bed without tumbling and becoming very puky. Any advice would help.