What is this??????????????????????????…

ok so sometimes when im at school walking in the corridors or in cl sometimes i feel breathless and dizzy! i dont know why but sometimes i cant talk and walk either and i feel really stupid but even when i take a deep breath it doesnt help and it just makes me feel even dizzier so i dont know what to do and also i breath with my mouth closed and i cant breath with my mouth open cos my lips shake , and i dont think its panic attacks cos ive had them before and this is nothing like a panic attack but i was thinking maybe its something along the lines of social anxiety? cos i also get sweaty palms and i fidget and suffle in my seat a lot and my eyes roll and i look to the floor a lot this is mostly in the morning and sometimes by then afternoon in ok . please help it really makes me feel dizzy and bad ?? :(