abnormal uterine bleeding
"I was on the shot for 2yrs straight about 3yrs ago. I absolutely loved it and I would have recommended it any of my girlfriends. I didn't have one period and no cramping for 2yrs! Loved it!  Not even 2 weeks after missing my last shot I became pregnant. My daughter was born in 2013, and about 2months ago I started the shot again. Worst decision of my life! I have not stopped spotting! Every damn day for almost 2 months and I'm starting to get really crampy and I've have terrible migraines. I've been having mood swings and I've never experienced  anxiety so bad in my life. I would seriously consider looking into the side effects and reading up on the shot before you get it."