Help!!!!

Mary • Hello my names mary im 33 my husband is 38 we have been married since this july 2015 been together since april of 08 we have two beautiful daughters ages 15 and 7 and s sob thsts 4

So I woke up feeling dizzy and when I lay down or get up I feel dizzy I checked my bp and it’s 175 over 100 now idk if o should freak out it’s in the middle of the night I have a doc apt Thursday I’m 29 weeks pregnant