Hi i just wanted to ask if ones cycle usually lasted for 6 days and has reduced to 3-4 days but quite light. what could this mean and require ?

Sometimes it happens: Many women have occasional variation of their mucus discharge, some spotting between periods, a heavier period, a lighter period, a longer or shorter period, or even a missed period. Having one or two of these symptoms doesn’t necessarily mean there is a medical problem, but a visit to one’s primary care or Ob-Gyn doctor is a good idea if symptoms are persistent, recurring, or worrisome.