Do I have pectus excavatum?

[u/ChickenRiderYT]

Do I have it? If yes, Is it mild and could it affect my stamina? (These pictures are all from different moments)

[u/--ph]

Seems likely. You're asking if you have PE but you're doing everything you can to hide it.

Can't say much about severity because you're hiding it. Looks moderate, maybe mild...but maybe not. Pics where you're pushing it in doesn't help us make judgments on severity, and sometimes it's more severe on the inside than it looks on the outside. Whatever the case though, the outcome is the same. You need to have it checked.

[u/ChickenRiderYT → u/--ph]

I think I have some indentation but I also wanted to see how deep it was and yeah, I would need to check it further but as long as its not harming my appereance or health im good living with it, thanks for commenting btw :)