Is there a reason why i am so tired sometimes i sleep for 12 hours straight . without eating or anything and then i always have headaches what's wrong?

Need more clues: Finding the reason might require a serious investigation. You can start with a physical exam and expect to continue on to an exploration with a psychotherapist. The results will provide clues that will allow you to set things in motion for resolution. You can expect to find answers, but it might take time and effort.

Needs evaluation: Dear cuttlefish, this could be related to medical or psychological issues. I recommend that you see your physician for a full physical to explore this further. Take care.