Tubes tied

OK, so I have 3 kids and do not want anymore. I want to get my tubes tied but I'm extremely nervous. I'm emotionally scared for some reason. Like I'm scared to be put to sleep, etc. How do I set up an appointment to talk about my concerns before I decide to do it. I have backed out twice with my old doctor, only because he didn't seem to really want to talk about anything other than just doing the procedure and saying it's an easy in and operation. So has anyone else had this problem and still went on to get tubes tied? I'm just a nervous wreck lol.