Should i stay with a doctor that keeps guessing around with my health without further evaluation or referral to an speciallist though i'm paying?

Confidence important: The strong relationship between a doctor and a patient depends on confidence. A doctor needs good communication skills to listen and explain. Some doctors are smart but communicate what they are doing poorly, which frustrates the patient. The doctor should be able to explain why they want to do a test or why further testing isn't needed. From your question, it sounds like you need a new doctor.