abnormal uterine bleeding
"So I've been on depo provera for about a year and two months and there is positives to it but then there is  also the negatives. The first time I got the shot I bled for two months but it's gotten lighter each shot and getting shorter for spotting and the periods, going from two months to 3 weeks. Everytime I get the shot my period disappears for a while and then spotting will happen, I'm giving it a couple more times, and if the periods don't die down then well I'm stopping. 
Postives-
Periods are getting shorter and I don't really have to worry till it gets close to my shot.
No weight gain actually, only a couple pounds.
No cramps at all
The negatives-
When the periods start, moodiness is horrible
Period starting 
Spotting 
Tiny bit of bloating"