trippin off my period

Eliza • Taken , mother of two . My son & daughter 💓
Yooooo so my period came last week ,
On a Friday ? And it was so light light light . . 
You know slow flow but then on a Thursday of this week it was heavy and Friday heavy and Saturday heavy like wernt you supposed to get off like Thursday cause I get my period for 6-7 days and it's been 8 days and if it continues what should I do?