Not itchy red patches on lower part of body

Hi mummies, I've been having these not bulging red rashes on my thigh, calf and butt, its not itchy but scary to look at. It has been worsening over the days and im starting to get afraid. I forgot to check with my gynae when i went for the check up yesterday and my next appt is 2 weeks later . Im currently at 36 weeks. the red patches are getting redder and its kind of scaring me. Not sure if its because my leg cannot take the weight of my body or is it blood not circulating well. Does anyone else have this problem too?