abnormal uterine bleeding
"I started the shot a week after my period ended in February 2016. I got my period at the end of March that lasted 1-2 weeks. Though it was annoying, I just went along with it because my flow was lighter than usual. When it had finally stopped I was good from mid April until the first week of May. I was due for another shot in May but I had already made the decision that I would not go back for it because the irregularity of my periods and the fact that I would spot after sex with my boyfriend became too much of a nuisance. After skipping the shot, I bled nonstop until the end of the month. This shot is a headache and I would have been better off without it. I'm just hoping that when my period comes for June it will be back to normal."