Oh, and just wanted to make a comment...it's wonderful you ask lots of questions! I guarantee that you are also helping someone else who may be having a similar experience, but is too shy to post! So ask away!!!
Oh yes, the wonderful world of hormones!!! I had that early in 2 pregnancies, and used Aveno Oatmeal moisturizer, that did the trick for me. However, it is best to talk to your Dr. before using anything on it. Good luck to you!!!
Yes, it is normal. If you google rashes during pregnancy, you will see just how common it is, and you will find lots of info on it. I believe the cause is mainly hormonal. Call your doctor to see what is safe to apply to your skin, you may need something prescribed if it spreads or becomes irritated.