30 weeks and a rash/breaking out?

Lainey • Due with Baby #1 Nov. 2016!
So I'm just short of 31 weeks, and I'm noticing that I have either a rash, or al breaking out, on my arms, shoulders, and upper back. They're tiny red dots, some raised and some not. It doesn't itch really but feels a bit dry. I noticed it starting on my arms a few weeks ago but either it spread to my back or I just didn't notice it before now. My face on the other hand, is as clear as ever. 
Is this normal??