Unfortunately I experienced a lot of problems with my pregnancy. I was lucky to have a brilliant Ob who really took great care of me/us. I took the approach that if my "problem" occurred during business hours I called the Ob's office. If however my problem occurred outside of regular business hours I would call the hospital. Often if it was something the hospital felt the Ob should know about they would get hold of him for me from whereever he happened to be (golf course, restaurant, home etc). Places that I would not have wanted to disturb him unless it was really necessary. Why don't you ask your Ob what process they prefer? I hope that by being so prepared you will not have any problems. xx