Cholestasis advice

For the last week or two I've noticed that my hands and feet have been extremely itchy. At first I thought that it was probably just due to it being so dry and cold here, but I didn't really have dry skin and lotion had no impact. I tried some anti-itch cream which also didn't help. I'm beginning to think I should ask to get tested for cholestasis. Should I call and talk to a nurse to see if I should come in early, or wait until my appointment on the 29th and talk to my doctor? I'm currently 24 weeks along.