I've actually had that happen to me before as well many years ago. Even woke my wife up after the third one.
...needless to say, she thought it was a lot less cool than I did. Never really found any reason for it, but sometimes, I've found that signs are there to make us look more deeply at things we are doing. But I think it's better to not read TOO much into it.
Also, subconsciously, it seems you brain is able to actually keep track of time on it's own, and your concerns may have caused you to wake yourself up. Either way, always keep an eye out for God's puprose in your life.
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