I sleep too much and I get exhausted easily, is there something wrong with me?

Alright, so I'm 13 years old and I've been sleeping in a lot. I usually go to sleep from like 12-2 am, and then I wake up in 10-12, so I basically have like a 1-12 hour sleep (mostly 10). So, it's 10:36 pm where I live and I'm already feeling a bit tired, and I have done absolutely NOTHING all day besides sit on my computer and watch videos/ chat with friends. Do I have some kind of sleeping disorder? I feel like I'm getting a good nights rest, but throughout the day, I feel lazy/ groggy. Please help me, I don't know what's wrong with me and I don't know what to do. Thanks.