I have the same issue living in the boonies. Fortunately I have a better doctor now than my original one when I first moved here. Sometimes it takes three months to get an appointment.I'm afraid this is what's starting to happen with me: I'm having chest pains that are so sudden & painful that they almost take my breath away. So far, a mammogram and an echocardiogram show nothing wrong with my heart nor has the cancer returned but I also had a chest MRI and am having trouble--unreturned calls, etc.--finding out the results of that. So starting with the calls again today; it's so frustrating. And the way things are around here, there's no getting rid of one doctor and getting a better one; you're lucky if you can find a medical professional of any kind who's even taking new patients. (What I get for living out in the boonies.)
I hope you get this diagnosed and cared for soon. It has to be very frustrating.