I had started a period on the 26th of Nov. and I started again on the 5th of oct. but that one only two days were the first one was normal. Which period should I go by to determine my next period. to know if I'm pregnant or not. If I got by the one that started first then I know I'm late , and the second one I am not late. I really need to know if I need to take a test or not. [/I]

Your last period, regardless how light it was.