Hello
when my sister was pregnant with her son, she had that. The dr told her it was from her hormones changing. They eventually went away, but the baby was born with it too, and the dr told her the same thing. If your hormones are going wacky it will affect you and your baby's skin. It wasn't anything she had to worry about. She just had to wait till it cleared up. Hope that helps and good luck.
Cin :d