Depo shot (GOOD EXPERIENCES ONLY)

I've been on the depo shot for about a month and I've been spotting and on my period for about 13 days. Did anyone who is now having a good experience with this shot go through this... it's a super light period but it's still very aggravating. Can someone help me and give me some clarity. How long did yalls last? My periods don't normally last longer than 6 days...