For all the people who are calling the OP ungrateful or a bitch and that she can just go to sleep when she's done opening presents...you do realize that she actually cannot. That what insomnia is, lacking the ability to fall asleep just because one wants to. This was the OP's birthday, that means she should have the right to do what she wants on this day, even if it is sleeping(Something that would be precious to an actual insomniac). Of course since I'm guessing most of you don't actually understand what the Op's going through, you'll just idiotically insult her throughout saying she should be grateful.

My mom pulled that shit, too. Completely invade your space, disrupt your routine, then you get an earful of "It's your birthday, BE HAPPY!"