I was 6 days late and then on October 3 I started it seem to be a normal period so I am wondering why I was so late and could there be a chance I am pregnant?

Mother Nature frequently throws us women a curve ball. Probably nothing to worry about. We can't all be regular 100% of the time.

How old are you? This may be a factor also.

Are you on any birth control?

Lots of factors can delay your period. Excessive stress, diet changes, or really no reason at all. If you had a "normal" period, just late... chances are probably slim that you are pregnant.