Deaf?

It’s my first day in hogwarts, im the youngest one there, everyone start 1 year when they’re 11 but im only 10. Im really tiny, shy, and deaf. I sont talk that much which many people notices after awhile, and they start wondering why im mute all the time. The boys in 6th grade doesn’t notice me at first because im really quiet, but then one day, I sit on the floor in a corner in the common room playing card with myself (solitary). They don’t notice me at first but after awhile three boys starts fighting in the middle of the common room and someone almost trips over me, and I doesn’t hear them so I dont react.