Thanks for the query.
Normal blood pressure should be 120/80 mm of hg. If it increases above 140/90 then that could be taken as hypertension
To control blood pressure you can take measures like taking salt restricted diet, taking sufficient rest preferably in left lateral position.
High blood pressure
can hamper the blood supply to the uterus, there by the nutrient supply to the baby will decrease, that can result in intrauterine growth retardation
of the baby.
It can also affect the health of the mother adversely.