Hailey,
Your far too young to be joining medical forums and worrying about your health, you need to speak to your mum or dad about what you are going through so they can provide you with what ever help and support you might need!
Your at the age when many different things could be the problem, your still susceptible to common childhood diseases, viruses and infections, your physically developing, your hormones are still fluctuating, your diet may be causing vitamin deficiencies ie low iron, low vit B etc, you may not be getting enough sleep....honestly there are so many common explanations that it's in your best interest to learn to start talking to the adults in your life about what's going on with you and not try to handle it on your own!
I hope this helps......JJ