breathing problems

im a 16 year old male, i weigh around 62kg and im around 5"8, from the past 3 months ive been getting this problem where right after i come to school i start feeling shortened on breath, it doesnt really feel veryy bad but its pretty noticeable, this never happens on weekends infact last 2 weeks i had holidays and the whole 2 weeks i never got this a single time but yesterday as soon as school started and i came back home or like 1 hour before school ended i started feeling it again, my chest becomes kind of tight and when i take a long breath theres light wheezing i dont think its any big breathing problems like asthma but i wanna find out what i can do and what can really help me to figure whats going on in my life i really feel helpless, btw i am doing perfectly fine in life no anxiety no stress, just random overthinking tbh but not too much that causes anxiety. sometimes i do think its school and sometimes i think its just a pattern thats coming and going every year for some reason