Input please...

Jennifer
I'm confused my period (I think) was on time... However 2 very LARGE differences... 1) very light  (highly unusual for me) 2) no cramps zip zero zilch nada..(again highly unusal for me).  I am usually a heavy bleeder with monster cramps ... I took a test (dollar store)this am and it said negative ( it wasn't my First urine of the morning though) ... What do you think??