TTC After Depo For 3 Months So Far

So On Feb 24th I Bled From Then To Feb 29th; Then On The 9th of This Month (March) I Started Spotting The Day It Shows I'm Suppose To Ovulate. I Went From Spotting To Medium Blood That I Would Only See When I Wipe And Very Little On A Panty Liner. It Stopped Last Night And A Little Spotting Returned Today (March 14th). My Last Shot Of Depo Was Sept 29th 2015. I Wish I Knew How To Track Whether This Is Ovulation Blood Or My Body's Way Of Regulating Itself. I Been Taking Vitex And Maca Since Feb 3rd And Fertility Blend Here And There.