First, you have to monitor your BP for certain period like take it every morning on the same time for at least 3 days to conclude that you really have a low BP.
Second, you can increase the consumption of green leafy vegetables.
Try also to lay on bed with your feet elevated to improve your circulation.
Third, if you really conclude you're hypotensive (low bp), ask your OB what medications is safe for you.
Take care 😉
Jimenez Lapuente Rem