I'm sorry you can't sleep Are you taking any medication that could be causing the troubles sleeping? If you have melatonin I would try that. Alternatively you could take an anti anxiety pill if you have any.
I would try to do something that usually helps you to relax (eat a yoghurt; drink some tea; talk to a friend on the phone; listen to music..) And then if after 30 mins you are still not asleep, try doing some light housework for a while. Afterwards go back to bed and see if you can fall asleep easier. This 'routine' helps me sometimes. I also leave music/hypnotherapy tapes on during the night when I"m very anxious. Not sure if it helps you but I hope it gave you some ideas.