Is this falsetto or not?

im 14 and a tenor and can sing quiet high from my head voice but i can sing this rely high scale higher when i breathe in and make my mouth into a O shape it sounds like something off a opera thing or something its really high and when i sing like it its a really high high note like a mezzo soprano note all tho its not really my chest or head voice but i feel i have to breathe to do it sometimes but even so my voice is breaking still???