Ouch! Put some cool packs on them, or get some papertowels, get them wet and stick them in the freezer for 3 minutes, then wrap them around your legs. it works well!
I have been having the same problem and I have found nothing to relieve it other than trying to keep off my feet as much as possible. I am so swollen that when you push into my feet an imprint is left for a few minutes, like putty or something, it's gross lol.
I have found that foot rubs help and they get things moving a little but obviously DF doesn't want to rub my feet 24/7 so I dont get relief very often.
I hope you find something that works for you!