Is anyone else dealing with this currently? or has anyone had it in the past?

I'm currently on day three of officially not being able to fall asleep...then when I do wake up in the morning I'm completely exhausted...i feel like I was hit by a bus!
I went to the Dr on Monday and she said I could take Tylenol PM or Benedryl to help me sleep...the Tylenol PM isn't doing a thing!
any helpful tips? I don't want to call the dr looking for drugs (which they said they can prescribe) but I don't know how much long I can go like this, especially that I have to go back to work in a few weeks and I'm desperate to sleep before DD comes.