Everytime I go to bed I tell myself 'I will remember all my dreams and wake up after each one'

well, this has given me a very high dream recall and last night I remembered an astonishing 10+ dreams and oddly enough I woke up 4 hours after I first went to sleep. After 4 hours of sleep I was able to recall 5 different dreams. None of them were very long but I clearly remember 5 seperate dreams that all occurred before 4 hours of sleep which leads me to wonder at what stage of sleep was this?

I didn't wake up after each dream I just woke up 4 hours after i went to bed and was able to write down 5 seperate dreams in my dream journal but I would think I wasn't quite in REM sleep? And even if I was I had to of started dreaming at around the 3 hour mark?