Rash/hives?

Br

So I’ve got what I think are hives or some kind of rash😣 I’ve been itchy for weeks and now I’ve been getting these bumps! The itch and burn at the same time. I called my doctors office but the nurse said it’s not pregnancy related since I’m only 12w but I didn’t have this problem before pregnancy. This is my back,legs and sides but I also get them on my arms but not on my face or stomach. I haven’t changed anything or ate anything new (actually having trouble eating) and we use all free and clear detergent for a very long time.