Still haven't had an appointment...

I'm (according to my last menstrual period) 17 weeks and have yet to see a doctor about this pregnancy... I mean I definitely procrastinated in the beginning and have 5 kids to attend to I always forget about myself plus there was something up with my health insurance well I've been trying for 2 months for my first appointment and nothing! They say they will call me back they never do! I just want to make sure baby is healthy and growing and exactly how many weeks I am and of course would be great to know what I'm having... But I just want confirmation that i am... I mean I don't look pregnant and don't feel pregnant only thing is missed period(this is #6..)