What can this be? TmI

I've been having really bad itchy skin between my boobs started at around 36 weeks now I'm 37 weeks. Thats the only place i have a rash...The palms of my hands and bottom of my feet itch alot too but It doesn't look like I have a rash or anything. But it does get worse at night.

Here's some weird angles of my boobs hope you can see the rash. Help