A movie called "Inception"

Yeah I watched this movie while ago, and I think that it is a very interesting movie. I'm not  going to spoil the plot of the movie so I'll tell you that it's about few guys and they can go into peoples dreams. Yes I know now you're thinking: "Why on earth do they go there!?" Well they get paid for things that they do there like steal somebody's ideas or so. I think that the movie is great but a bit confusing if you don't pay enough attention to it and in my case I were half of the movie like:  (O_O) "What the..?". Oh and the ending is so confusing it's kind of a dream in a dream in a dream (or something like that i don't know). The creepiest thing was that one night I saw a very long dream (I lived in that dream like a week) and when I woke up I were confused about if this is real or dream?

So tell me guys.. have you ever had the same problem?