help! why do my legs look like this? Worried

The picture doesn't nearly show how bad it is due to the lighting but my legs are crazy splotchy blue, purple, red, w/whiteish spots. I've been standing doing my makeup for about 5-10 minutes until I looked down and kinda freaked. 
Is it just poor circulation? I got out of the shower like 20 minutes before this picture. Elevating my legs helped but I want to make sure I shouldn't be worried about something here. 
I'm 27 weeks.