Waking too early in the morning

Hi, am a mother of 2. I'm 33 years old this year. My girl is 6 years old and my boy is 2 years +.  I am sleeping with my boy everyday.  Here is my question, my son's sleeping pattern is quite bad, he moves a lot and always come to my side, so a few times in a night, I would wake up and bring him back to his place. However, there were a few occassions where I have difficulty falling back to sleep after waking up at about 4.30am or sometimes about 5am,.... Can I know why?  And recently I told my problem to one of the chinese doctors, he said waking up after 5am is ok but not 4am + coz that's the time our lungs are in the cleansing process.  So, his opinion was if I wake up at this hour means I have some lungs problem.  Is it true?    I wouldn't wake up by myself. Normally I was awoken by my son, then I would go and ease myself and when I return to my bed again, I couln't fall asleep.... This chinese doctor's opinion is making me worried and once I awoke, I would think of his words and that making me even more harder to fall asleep.  Please help me. thanks.

[margypops]

As this is causing you to worry ask another Doctors opinion, What time do you go to bed if it is early perhaps you have had enough sleep by 4-5am so go to sleep an hour or two later and see what happens, I havent heard of the Lung cleansing but who knows. Good Luck