Numbness & dizzy

JJ 💖
So I'm 24 weeks tomorrow and recently maybe 2 weeks or so I have been getting very numb when I lay down in ANY position. Ex. Legs up, left side, right side, back , pillow underneath... It's stopping my blood flow the only way I know this is when I stand up from sleeping to go to the rest room my hands and feet are numb and PURPLE. Also when I'm up longer than 5min I get dizzy to the point of collapsing. Had anyone else experienced this? I called the nurse last night waiting for a call back.