Also, the thing about reality checks is that most people just do them out of habbit, therefore the reality checks pass in the dream because they are so used to having them pass when they are awake. The point of RCs is to question reality. You can just block your nose out of habbit every half hour, but you will accomplish nothing.
Absolutely right. The thing you are experiencing is a DILD on the brink of awakening. Happens to me every time I wake up. Just as I'm starting to wake up is when I become lucid, every single time. It just means you're that much closer to having a full fledged DILD, but has Spartiate said, you must really take time to literally question reality. Have a look around you. I always try to convince myself that everything could just be a dream, as often as I can. (lucid living).