They don't always know everything, either. Also, some women just have a lot of false labor. If you feel more comfortable going in, then go in and have them monitor you. That's what they are being paid for. In spite of their attitudes, it's sometimes hard to tell when you are in active labor, even when it's not your first.
Every pregnancy is different.
You sound like you are doing fine. Hope you get to see your son face to face really soon. They really never hurt at all, but I thought I was just lucky. I'm a first time mom and with the exception of what I have read and what I have been told in classed and through friends and peers I have no idea what to expect. You would think health care professionals would be a little more sympathitic and understanding and help you.