when do you start to count your days for ovulation

Kaylee

Im super irregular when it come to my period some months my cycle is 28 like normal sometimes it’s 35 some times it’s 32 it’s all over the place, so ** when do you start to count the days for ovulation, the day your period starts or the day after it ends... this month my period was Jan 2-8 when would I count to figure it out?