28 weeks pregnant body itches all over help!!!!

I have been having itching all over my legs, stomach, arms, back and it's been going on for a couple of weeks now I've tried changing laundry detergent and everything it get extremely bad at night to the point it keeps me up sometimes. I've figured it would go away by now but it's starting to drive me crazy cause it's only got worse I have not ate anything usual I've added some pictures just to show some examples. Does anyone know what this could be!??