My son has pulmonary valve stenosis and has been having chest pain with bilateral arm numbness and a sudden onset of head pain for the past week. should i be worried and take him to see a cardiologist? he's not doing anything but sitting at his desk at sc

Cardiologist yes: Absolutely see a cardiologist as he is symptomatic from his pulmonic stenosis which is very treatable.

Maybe serious : Sounds like congenital heart disease especially with known pulmonary stenosis. Depending on his age, associated birth defects need to be entertained. Please see a pediatric cardiologist.

Yes: Those are call concerning symptoms. Please take him to see a cardiologist as soon as possible.