I have low blood pressure and will have it for the rest of my pregnancy. A few weeks ago I was struck with the flu and because bubs took everything I became dehydrated and my blood pressure dropped to the point i was nearly hospitalised. The doc told me to drink heaps of water for the next couple of days (by the end of it i felt like a fish) but i picked up and now feel ok apart from the occasional dizzy spells. I have to constantly drink so it doesnt happen again but its a real pain cause im running to the toilet alot anyway!