Skin rash

I’ve developed a rash that has gotten progressively worse within the last two weeks. They are small raised itchy bumps that started on my abdomen and now on my arms, back, butt & chest. I showed my OB two weeks ago and she she just said to take pictures of it and it’s clearly getting worse. I haven’t started any different medications and I’m using the same soap/detergent. Anybody had this issue before?? My OB didn’t seem worried a few weeks ago but like i said it’s gotten progressively worse. My skin looks awful. I’m 11 weeks 😭