if U Have your Menstral Period In Between your Actual Normal Period?

What actually happen,if u have your menstral period in between your actual normal period?.
Say, your normal period is 25days and 13days before your nx period,u xperince another one,
but right now the suppose normal day for my wife to see her period remain 3 days,after
she had xperince one in between,please,i nid sm advice from any xperience fellow in the house.

I'M A BIT CONFUSSED HERE,

POSTER,
HOW CAN UR GENDER BE READING FEMALE AND U SAID UR WIFE IS HAVIN MENSTRAL P?

AR U A FEMALE GAY OR WOT?

please, EXPANTIATE FIRST B/4 WE CAN HELP U. IT LOOKS DECEPTIVE. I BEG.