littleb
i am pg with no 3 and have suffered with low bp in each pregnancy. My std BP is about 90/50 going up to 100/60 or 70 later in pg. This is a pai, i know: have you tried drinking lots of preferable water? i found that this helped. I tenede to think that i was drinking loads, but remember your circulating blood volume increases hugely when you are PG and if you have low BP you need to help it: and coffee, coke etc will not really help as you pee it all away!
The good thing is that you are unlikely to have high BP later on in pg which is a good thing.
I worked until 36 weeks with no 1 and 35 with no 2: i am 30 weeks now and shattered but that has more to do with 2 little ones and the fact that i am older!
Don't forget though that you are allowed to slow down: in my first pregnancy i thought thta i had to prove how great i was: i was very well, but there is nothing wrong with taking the pace down even by a notch or two: you will have plenty of time to be superwoman when baby arrives!