When did my period start????

Katie

I had spotting the 6th thru the 10th then today I woke up to heavy bleeding so do i count the 6th as the first day of my period or the 11th since it was actual heavy bleeding? Just trying to,get my info right, we have been TTCing for about 3 years and are giving it until December (that makes year 4) then we are done trying. So really wanting my info to be as correct as possible. Thanks all!