I had one shot back in June 2012 but it sucked so when my next one was due in September I got the Paragard IUD instead. I have only had one period since then and that was in December. I got the Paragard removed 2 weeks ago because it sucked also so now just waiting for everything to go back to normal. Glad I am not ttcing as of right now but it will still suck in a couple of years if its still effecting me even after only having one shot.
I am sorry! I got off the shot in June of last year and my period is just now getting back on track. I went from no period for months, to bleeding 3 weeks on and 1 week off, and finally it is starting to be back on track. I am pretty sure I could track when I ovulating now if I wanted to. Everyone is different though, so just try not to get your hopes up, but know it could take a little longer then you want it to. Good luck!