I was 8 days delayed (delayed that long for the first time since using rhythm method in 2yrs) in December 2011 and I got my menstruation in jan 2012. But I was wandering why my menstruation lasted only 3 days when my normal is 5 days and the flow was light. Is it possible that I am pregnant? I had 2 over the counter pregnancy tests done on the 3rd and 6th day of delay and they were all negative.

Thank you very much! God Bless =)