can low blood pressure cause any problem during pregnancy?

I've had low blood pressure the whole time I've been pregnant. On bad days it makes me dizzy and feel faint. I have near black outs. It helps to eat something first thing in the morning. The problem is when you get a mix of low blood pressure and low blood sugar.

3 years ago, I was diagnosed - hypertension with a reading of 160/100. I used to feel dizzy a lot, my legs had awful cramps, and levels were very low in my potassium, causing my fingers and toes to always cramp together. One day I started to feel really faint while I was driving with my daughter in the back seat and I passed out, hitting 3 cars and ending up in a ditch. That moment,I knew I had to do something because my meds weren't working. I heard about this diet from a friend and thought I'd give it a shot. The results have been remarkable. In just 21 days, I honestly can't remember feeling this good, my blood pressure went from 175/110 to 125/70.