Re: swelling during pregnancy
I second compression stockings. Also, elevating your feet as much as possible during the day (and at night after the kids go to bed) will help. Dont' restrict your salt, but eat it within reason. Danger signs include redness, tenderness, a hot spot, etc. Swelling isn't even a criteria for pre-e anymore, it's really just so common in pregnancy. I know it's miserable, though!
Nothing I say ever constitutes medical advice.