I've had high BP with all my pregnancies and each where delievered early. They included swelling of the hands, feet and face. Flashing lights/spots before eyes, protien in urine and they also run a blood test to check for kidney function and other stuff that at the moment i can't remember.
I know with my BP they wouldn't allow it to go mcuh above 140/90.

Sorry if all that scares you. Hopefully you won't get any of that and they will watch you very carefully now you have had high BP. It might have been a one off i had a few like that with my last pregnancy and a nice hospital stay with it. They thought they was going to deliever at 26wks but i lasted until 37wks 2days.