Going through my things?

So I keep a bag with pads and tampons in my backpack... This boy keeps grabbing my back pack looking for food (fat ass) and I always just scream and punch him and he stops but I swear the last time he did it I hit him super hard and he said whats there to hide you wouldn't need and pads because you haven't even gone through puberty... Well obviously I have 1. I have boobs 2. I have a lot of hair on other places other than my head 3. I bleed from my vigina once a month 4. Im about 5'6 5. I don't think its any of his damn business 🖕🌸🙄