same here i have low bp (about 90/50) and get dizzy alot and see stars, been getting lots of pins and needles and dropping things, midwife said not to worry so im trying not to! ...try not to rush around, get up slowly, and make sure your eating properly. you can buy home bp monitors if your worried about it, my mum has one and it straps to your wrist like a watch then you hold your arm across your chest and about 10 secs later it gives you a digital reading...or go to ur chemist they have bp machines.
good luck