How is my ECG normal?

I was born with a heart murmur due to pulmonary valve stenosis. I've never had issues with it but I just figured it would show up on an ECG. I don't know when my last ECG was, I'm guessing some time during my childhood (I'm 29 now) so I have no idea what the results were. Any idea how an ECG would be normal with congenital heart disease?

i have a congenital heart disease and my ECGs (i get one yearly) come back normal. However, my echo shows the problem, but for me its considered ‘normal’ because it looks how its supposed to look for me.

what mind of congenital heart disease do you have? Does it cause you any problems?

i have bicuspid aortic heart valve, and it has never caused me any problems. However, this year i was diagnosed with depression and panic disorder and ive had lots of heart/respiratory symptoms that come from anxiety.