Derukun, are you doing anything with marching band? THAT can be the ruination of the chops of young aspiring players - playing too hard, too loud, too much pressure, it's more important that the horn is straight out than how it's sitting on the chops, so the tendency is to play with the mouthpiece mashed up against the teeth incorrectly, etc. My chops used to get all out of whack when I was an Army bandsman and we were doing a lot of outdoor ceremonies and parades, and it would take me a day or two of soft controlled playing before I was really worth a dang in a brass quintet rehearsal - the marching just killed off any kind of controlled soft playing for a few days.
There seems to be some general thoughts about your predicament:
1.) Chops have probably been strained
2.) you may not be practicing consistently, and therefore the additional playing took its toll on them
3.) a way to get ahead on this is some soft, controlled playing - long tones, chromatic scales and articulation work might be in order
Something you may also want to consider is working some flexibilities, and by that, do some very basic low flexibilities - arpeggios are good, but keep everything below 3rd space tuning C. I like to start mine on low F# and gradually work them up chromatically to the C. Over and over and over until they are locking in and secure before moving up to the next half step.
Resist the urge to over-practice. There are day where if I've been working my chops hard for several days in a row where my "practice" will consist mostly of a good warmup that last for 20 minutes or so - I don't want to work my chops, but I don't want to take the day off either.