How serious is the PAH? Long do i have!

Recently I got my 2D Echo done as part of routine checkup from health insurance company. I had a VSD closure done when I was 1.5 years old. In the 2D Echo, everything has come out Normal and even the VSD patch is intact. However, the PASP value is on a higher side (39mm Hg) and the Conclusion in the report says Mild TR/PAH. My health insurance company denied the service citing Pulmonary Hypertension. So naturally, I googled up on this and found its prognosis very bad (median 5 years survivability) as it is not curable. Weirdly, I haven't yet shown any symptoms and only time I get shortness of breath is when I climb 4 floor stairs, which i attribute to my weight. I consulted with a Cardiologist for the same, but he was very chill saying it's very common here and you don't need to worry about it. Just redo Echo once every six months. He didn't prescribe any medicine, nor subjected to any additional test like RHC. So my question is: 1. Is Mild PAH common in India? 2. how long do I have