mamamoose, do they try having you lay on your left side to take your blood pressure? I know I am a bit "excitable" at any dr. or mw appointments, and usually my bp is a bit higher. I have been to the doc before, not pregs, and told them it would be high. I was right, and asked them to try again at the end of the appointment, and it was always lower! While prego, we would have me lay on my left side and it would be way lower.
So, if they are doing it right at the begining of your appt, maybe try again laying on the left, or at the end of the appt. and see if there is a marked change. And as far as what I've read, you should salt to taste. I don't know what the actual recommended intake is. And if you were eating french fries from pretty much any restaurant or fast food joint, yeah, they have an amazing amount of sodium in them!! But I don't know how much it would affect your bp. I would talk to your mw about how much salt is safe for you, so that you are still getting the amount of sodium your bod needs.