Has cycle for 6 days 2/10/2015. intercourse first day of period and the last day. my breast feel a little tender. when do i ovulate i am irregular?

Can't predict: If you have irregular periods then predicting when you will ovulate is very difficult, and often not possible. In general, when a woman's periods are regular and exactly 28 days apart then she will ovulate on Day 14 of her cycle. Determining when you may have last ovulated is a little more accurate. Even with irregular periods, women generally ovulates 14 days prior to her next period.