birth control
"When I first got the shot I skipped my first period and then had really light periods after that for a few months. Then my period started occurring more often. About 2 weeks of bleeding then 1 week off then bleed for 1 week then 1 week off or less then bleed for 2 weeks. Really weird! That occurred for a couple months. Then I started bleeding non stop for awhile. It was really light but who likes bleeding all the time. Finally at about 1 year of sticking it out. I now am back to skipping the first period after getting the shot and sometimes skip the second or sometimes light spotting. I do bleed a little heavier just before my next shot is due. Makes me think it's wearing of too soon. Had no other side effects though."