Depo questions and maybe a little tmi for some

Okay so i started depo in july 2011 and got my last injection in late april2014. I finally got what i think was the start of a period in oct and had a couple of spots of light pink off for three days and only on the tissue. Then November 16-20 i had a very light semi constant flow of a little darker. No period yet for december. My question is does this sound normal? Its so confusing coming off of the shot because before i got on it my cycle was every 28-32 days and lasted 5-6 days. How long did it take for your cycles to return and to start ovulating again? All O and preg tests have been negative. Just need some reassurance.

Thanks ladies