Replying to Reoccuring knee pain thoughts/help

So i've been a lifelong skier (started at 3) am now 21, have been pushing it for a number of years now riding park and pow, getting to the end of last season i was starting to get minor knee pain in the LCL region when i skied hard (particularly when riding the mountain, taking airs, flat landings ect)

it continued when i skied hard this season in australia and is continuing now as i enter this season in north america and i am getting a bit worried. for sure it goes away after a day or two of rest or light skiing and does not come back until i start going hard again, but it has been consistently coming back.

Does anyone else have this problem? Its fairly minor i suppose but i ski every day during the winter and halfway through the days its starting to bug me where i can't go as hard as i want...which is annoying, and im pretty positive i havent torn anything or im sure i would be noticing this more...

should i book an MRI? see a specialist? maybe a knee brace? i dont know if im worrying too much about or not.

thanks to whoever leads advice