I'm not a local, but I got diagnosed by a doctor at a well-regarded hospital (Medical City Pasig) for a surprisingly affordable P500. Your situation may be different, though — mine wasn't hard to diagnose. So treat that number as the minimum.

Where are you? That makes a difference in both price and quality of care. In a major city you might pay 600P to 1,600P to see a doctor. Rural areas may be cheaper.

First you'd need a consult with a primary physician — ideally an internal medicine doctor — so they can do a general checkup or order diagnostic tests first to rule out any possible issues. Consultation fees at a private clinic usually run about P700–P1,000, depending on where you live.

The Dr Anywhere app is cheap and they're always on time. The doctor you consult can order tests for you; you walk into a local hospital or clinic, send the results to the doctor, and get your diagnosis.

Like you said, it's unknown. Is it muscle pain? Joint pain? Where are we talking?