Sherry,
 
I'm no expert,  but sounds to me like you need a new doctor.  To my knowledge, Mirapex alone won't help you.  You're right.  How do you know you have PD if your response to dopamine replacement (sinemet) has never been tested?  It's been my experience it's best to stay away from your general neuro types and go with a specialist in Movement Disorders with empasis in PD.
 
Greg
47/35