I was on depo for 5 years an loved it. Never had all the bad side affects that everyone else complains about. No period was awesome. Never got prego on it. However I got off it March 2012, miscarried April 2013, and finally had a successful pregnancy an just had my son a month an a half ago. This isn't necessarily because of the shot but they do say sometimes it takes awhile to get pregnant after it. A year is normal but 2years was very upsetting 

What's mini pill?

If you don't like the idea of a shot or the mini pill, you could always look into IUDs or cervical caps or something like that

I was in the deposit shot only for a year but I hated it. I gain thirty pounds and took forger for my periods to go back to normal when I got off of it.