Happy Holidays to you too!
Sounds to me (and trust me I'm no expert) that you should go see your doctor, or a rhuematologist. Sounds like arthritis, and if it is I believe it will only get worse over time not better.
I am 34 ( so not as young as you but close) and know how having arthritis sounds scary,and kinda unreal at our age. I walk my son to school on nice weather mornings, and we get half way there and my knees and hips start to ache....and the walk back home is awful. But I try to make sure I walk anyway.
Why not go see a doctor and see if they can help? Good luck.