It common to get a rash at the end of pregnancy. I've never heard of it as a sign though. If you think you are pregnant you can always try taking a test! :)
Im SO glad that i found this post, I have the same thing, only mine do not itch at all, they are just there but in the exact same place as you. Is this associated with pregnancy? because i have never had a rash that i can remember! I have been wondering the past few days if i could be pregnant because my period is all messed up, i had the rash for two weeks, been spotting pinkish discharge for the past four days, and my period was supposed to be due tomorrow. well, last night i had sex and the blood flow became a little heavier but still drastically light for my regular period ( just a little blood on a pantyliner) lol im just so confused.
My doctor said to use Benadryl cream... didn't do anything for me (because I have PUPPP) but I heard it works for most people and is perfectly safe. You could also try Caladryl lotion which helps as well. Basically just call your doctor and see what they recommend.