Keep trying norash40, I know it's frustrating but they are there for you to go to for reassurance as much as anything. Pregnancy is a big thing every time, and when it's all new can be a bit scary, I'm sure there are some MWs who understand this! When you call them just be completely honest, tell all your fears/worries about your symptoms and remember they are there for you. 37wks is not a time to be stressed, let them know you feel like you are being fobbed off and could someone at least examine you to see if you are actually in some kind of labour stage?
I don't know if that helps, but I remember how I felt first time round, and I'm just as bad now! . If all else fails get in to see your doc and explain about the MW treatment, if you get a family man they are usually sympathetic and will help you out.
Please don't worry too much, when labour does actually "kick in" you'll know and you'll be able to cope.
xx