Itching all over

I'm 30 weeks and have been itching all over (mostly on calves) very badly for almost two weeks now, is this common or should I be worried? I have also felt less movement from my baby in the last few days. I called my OB but they are closed today so I called the emergency number and the lady I talked to said not to worry that it's probably just dry skin. I have a OB appointment Tuesday, should I just wait till then or go to the ER? Thanks!