I am the same way. At night I NEVER know that I am wetting and will wake up to a full soaked diaper. Almost every night.
I have been sick lately and when I am sick, I usually have more accidents, so I have been wearing during the day too, and I find that only half of the time I will know that I am wetting, so I will have to check myself periodically too. I can usually tell by the way that my diaper is sagging.