What to do for high blood pressure in pregnancy?

Ok im 27 weeks measuring 28 weeks. Anyway I’ve been having alot of issues with my blood pressure today its been 100/58 i can barely stand last night it was 125 over something. My dr doesn’t seem to be concerned or anything. My question is what do i do? My dr doesnt seem to listen to my concerns about anything and just says well its your second but this one is soooo much different than the first that idk what is normal anymore