I think i might have add?

i tried to talk to my mum about this but she just brushed it off because she doesnt really know what add is. however i think i might have add i have always had problems with concentrating and sitting still. My teachers always told my mum that i was daydreaming,always seemed to zone out and wasn't listening. i really can't sit still i always have to move my feet or my hands if i'm forced to sit still i feel very uncomfortable. I'm constantly forgetting things although i really try to remember them but i just can't. when someone tells me a story i feel uneasy because i dont know how to react or what they expect from me. i always start things but never finish them eventhough i want to. i get upset very easily and i have many highs and lows in my mood during a day. i did an add test on the internet and i know it's not something i can take serios but i scored 103 points which meant that its very likely that i have add. i'm 16 by the way. what do you think?