Any post op's having trouble with insomnia?

Prior to surgery I was almost uncouncious all night...Now, 4 weeks post op, I find I go to sleep easily, but wake up around 3am unable to get back to sleep? Never had this problem...any suggestions??

We greatly appreciate your interest in helping us build our Q&A database. To discourage vandals from posting garbage, however, we require people to register before posting.