Browneyes, Have you been checked for sleep apnea? Also have you had your hormones checked? I was having heart palpitations waking up in the middle of the night. My doctors tried to tell me it was just anxiety. I insisted something else was going on. I asked for sleep apnea test and hormone test. I have sleep apnea and I am in menopause. Make sure you insist on all these tests. Hopefully it is just the anxiety. But it is better to be safe than sorry. I am so thankful I insisted on all of the tests being done. I now no longer suffer with the palpitations in the middle of the night. Best of luck to you