I usually have heavy periods but this month there very lite only small amount of blood?

Can happen sometimes: Many women have occasional variation of their menstrual cycles, some spotting between periods, a heavier period, a lighter period, or even a missed period. Having one or two of these symptoms doesn’t necessarily mean there is a medical problem. A call to one’s primary care or Ob-Gyn doctor is a good idea if symptoms are persistent, recurring, or worrisome.