I'm currently at the dr office waiting to see what the dr says. I'm 37 weeks tomorrow and keep waking up in the middle of the night with extreme calf pain. On my right side, I have some big vericose veins next to my groin and on the back of my calf. On my left leg, I have one large vein that has popped out and runs straight down my leg and bulges out over my knee cap. When I stand up, I feel a painful rush of blood go down my legs from my groin area on down.  Im concerned I might have blood clots. I'm already "high risk" due to ITP (low blood platelets) and because my platelets are low, I have very large immature platelets. Just a little worried about all this and praying it's nothing serious. Anyone experience this? This is my third pregnancy and I've never had vein issues or cramping in my legs like this before.