Heart Murmur in Babies

Ellen • 32 yrs old. Happily married. Have a 15 year old daughter. Suffered an ectopic pregnancy in Nov 2016 .. Rainbow baby, Charlie : born 12/08/2019 🌈 👶🏻💙🥰

My 3month old has been told he has Pulmonary Stenosis, mild narrowing of the valve that carries blood from the heart to the lungs. He has a further checkup in January. Has anyone experienced this before, or know much more about it?? .. pretty worried at the moment, I’d hate to think my son would need heart surgery 😩😩