1. When pregnant with my daughter, I found that often my blood pressure was very low (this is usual for me). But, about 35% of the time it would inexplicably sky-rocket to a borderline high area. I don't know whether it was stress, anxiety, diet, or weight gain that caused this problem.
2. I also had a tough time with swollen feet/ankles by the last trimester of pregnancy 1, so I'll pretty much do anything to avoid that again.
Something to check out and consider: This morning Fooducate posted a blog called 9 Ways to Reduce Your Salt Intake.
I'm only just now reaching my third trimester of this pregnancy, so I don't know if my approach will be effective for the swelling. But, I do know that my blood pressure readings have been quite a bit more consistent and reasonable up to this point.