keep waking up in middle of night
Ever since around the age of 26, I have been completely unable to stay asleep the entire night. On a good night, I will wake up only once. On a bad night, four or five times. I usually fall back asleep quickly. But it's been like this for years and I haven't made it through the whole night more than two or three times.
I've seen multiple doctors and their tests were all inconclusive. They gave me multiple types of medicine but none helped. I've read multiple articles and even books about good sleep habits and they don't help either. I've played with every variable I can think of and nothing helps.
So, is this normal, or do I have something to worry about?