I have had a period for eight days with blood clots and it's heavy, i was wondering if it was normal my periods are usually normal and last seven days?

It happens sometimes: 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 heavy periods persist, recur, or worrisome.