Hi MStat, welcome to dreamviews!

It's difficult to tell whether you were in a dream or not without some form of confirmation.

I suggest coupling your methods with some sort of stop-and-look-around technique that you do randomly every few hours. At this time you would also do a reality check. I strongly rely upon this for my lucids and it works very well (there's a link to a guide I made up in my signature). It's good to do a reality check when getting into bed, when waking up in the morning, and every time you get up in the middle of the night. And it's good to spontaneously do one every time you look at a clock, because time tends to change in dreams when you look once and then look again.

Good luck! (: