on dec 25 is the start of my period and it lasted at dec 28 . and at january 8 i have my period again until january 11 . that time im sexually active . then january 23 i have again my period at the first day , it is light in color and and small in amount . compare to the normal period . and the following day it became heavy like a period . and that time i have my stomach cramps and my period lasted at january 31 . which is 9 days that usually i have my regular period lasted 4 days ..  pls help thank you