abnormal uterine bleeding
"I had my second shot about a month ago,I  haven't had constant bleeding, every now and then (maybe 5 times since January) I have had spotting. I have experienced some cramps but not as bad as I usually get and I have definitely gained weight. I had sex for the first time since I started the injection and I have been getting cramps and bleeding like I used to before the injection. This has been going on for a week now. I am worried and I'm not sure if this is normal after having sex on the injection. Apart from whats happening at the moment, I personally do recommend this injection. I started it to stop the pain and just have a break from bleeding and it has done exactly what I wanted it to."