Ai, memang susah nak tahan tekanan darah tinggi masa pregnant, a few of my mum friends went through this jugak. Best thing is do light walking regularly, avoid salty food, and manage stress (dengar musik, relax la sikit), tapi honestly this is something you really perlu discuss dengan doctor sebab ada certain medications yang safe during pregnancy dan dia boleh monitor you properly. Jangan self-manage aje, high BP during pregnancy boleh jadi serious, so kena get proper medical advice from your gynae.