Hi mama! Please go see your OB right away kung hindi pa niya na-check ang BP mo recently, 38 weeks is so close na, and high BP during pregnancy needs proper monitoring talaga, kaya kailangan ng doctor's guidance.
A few of us moms swear by staying calm and resting when we can, pero yan lang temporary lang, the real thing is getting proper medical advice para sa iyo at sa baby. Your OB will know best kung ano ang safe at effective for you at this stage. Take care po!