Trouble waking up.

Patient: I am having trouble waking up in the mornings. This does not happen all the time but sometimes i wake do not wake up on time. I sleep through my alarm and do not even remember hearing it go off. I have been late to work several times because of this and would like for it to stop. I have tried everything to stop it, i do not eat right before bed, i do not sleep with the TV on, i go to bed at a decent hour. But still sometimes i just cannot wake up. Is there something wrong with me?