ovulation

Hey. So according to this app. I have started my vertile window...exact day of ovulation is on the 9th of may...i started feeling cramping this morning. it is mild though and have a discharge that comes and goes with each wipe when i go to bathroom. i came off depo shot in jan this year and just last month got my period back but lasted 2 days and spotting afterwards....is it possible that i am ovulating so soon after leaving depo shot