What Causes Cold Feeling In Genital Area At The End Of Pregnancy?

I m getting close to the end of my pregnancy but I m not due until March 17. I m confused about why I m feeling coldness in my private area and I hope someone can come up with a good explanation. I did have a test done to see if it s from my water breaking but the test said it s not amniotic fluid. I ve felt this rush of coldness about nine times today. Does anyone have an educated guess as to why?