Hello There. I can understand your concern. this service of posting your concerns/queries is free of cost. you can post your questions here and our doctors will try to help you out as much as possible. we won't be able to prescribe anything on this platform apart from common over the counter drugs. its clear that you need to stop smoking. what good does smoking have? it just harms and nothing else. we cannot predict when the mild pulmonary hypertension will become severe but it surely will if you continue. consult a MD physician in person for further help. best regards, Dr. Anil kumar jain. Balaji clinic, Bangalore.