I am now 13 wks post surgery and am having a lot of trouble sleeping. Most of the time I can get to sleep OK but then wake up (my mind starts racing) and I can't get back to sleep. I may sleep fairly well every 3rd or 4th night--after I've lost enough sleep that I am just exhausted. Prior to surgery my surgeon told me to expect to wake up during the night and not be able to go back to sleep. At the time I was so overwhelmed that I didn't ask why or how long this might last. He has given me some 5mg Ambien but I don't like to take it more than 1 or 2 times a week. I try to nap but just can't seem to sleep during the day. I've cut way back on caffeine--none at all except for morning coffee. Other than this, I feel great. I'm doing cardiac rehab with no problems. I have no other problems--no pain. I'm still trying to get my INR regulated--I went off Amiodorone 7 wks ago. Is anyone else having this problem? Does anyone have any suggestions? Should I take the Ambien more often?