M Mattea New member Dec 12, 2010 #1 usually, when my sister ends her period i am just starting, and me and my 3 best friends usually get it on the same days! its weird! i read somewhere that this is normal? if it is, why does it happen?
usually, when my sister ends her period i am just starting, and me and my 3 best friends usually get it on the same days! its weird! i read somewhere that this is normal? if it is, why does it happen?
