How To Lower BP?

I am 19weeks pregnant but my bp seems high 140/90, 130/90.. I don't know what to do.. im worried kasi ayaw coh ma cs or manganak ng maaga because of this. sa first 2 pregnanciea. coh.. di nmn mataas BP coh.. nsa 110/70 lng to 120/80.. Please advised. thanks poh..