birth control
"I've been on the shot for 5 months now. When I first got the shot, about three weeks in I started to bleed like normal period but then got lighter and lighter and continued for 3 weeks. Eventually it went into light spotting about every 4 weeks for a few days. I also will get a lot of sharp pain cramps that will last a few minutes every now and then but this happens randomly. Other than that I have no side effects. The doctor tells me the spotting and cramps will stop as my body gets used to the shot."