Your labs can change that drastically in hours.
I'm going to forward this to a couple of docs on our medical board, but the numbers you are reporting make you a severe preeclamptic, with a proteinuria reading above 300mg and at least one reading of either of 160/100.
The NIH Working Group Report
from a decade ago states that women with severe preeclampsia are usually monitored in a tertiary hospital from day to day because delivery could be imminent.
You're reporting a persistent headache and visual disturbances and nausea and vomiting.
In your shoes I would want an MFM to take a look at me, today. Was the hospital you went to last time one with a good NICU? They don't see us preterm preeclamptics often at community hospitals but the big hospitals with Level III NICUs recognize the syndrome. Can you go to a hospital with a good NICU and ask to be evaluated for severe preeclampsia?