It had in the past. I went many years without showing up and even was put on bcp because of it. But no, not this time. It would have been 6 months tomorrow since my last cycle started and I got the shot a few days later and have been getting it every 11-12 weeks like clock work since. I just hate this....mostly because I'd rather it be a cycle I'd know I'd be ovulating and we would be trying. That was part of the reason I chose this form of birth control. Having for no reason stinks! Also, I've been cramping most of the day.