ITCHY FEET IN LAST TRIMESTER

Brooke-Lynn • I'm 16 , pregnant with my first child, due 3/7/16 👶🏽👪💕
I am 31 weeks pregnant today. for the past week or so, I have been so itchy. my belly(obviously) and back, but the worst is my tops of my feet,ankles & legs :(
has anyone experienced this? is there anything I can do? should I talk to the doctor? 
It's so bad that my legs are scanning up and my ankles have sores on them !!