I usually get cramps during my period however this month i didnt have any cramps and it is lighter than usual bur not much lighter. abnormal?

Probably normal: Periods have normal variations. Some will be lighter, some will be heavier. Some other questions to ask yourself are: are there any other changes, other symptoms? did you have unprotected sex in the past several weeks? any changes in your medication? changes in your stress level? diet? exercise? There are many things that can affect your periods. If you are thinking pregnancy, the test is cheap.