Are there any times when doctors don't want me to call?
Nope. "Doctors always want parents to call if they're worried about what's going on," Dr. Steiner says. Always pick up the phone if you feel something needs immediate attention (high fever, breathing issues) -- even if you reach an on-call doc, a nurse, or the after-hours clinic that your pediatrician is affiliated with. But if the issue doesn't require immediate attention (hello, runny nose), most docs prefer you wait until regular office hours or even until the next visit, in some cases.