I have a gynecological exam every year. In fact, I just had one in June. I remain on depo because the alternative, having debilitating periods, is much worse. When I had periods, I routinely missed 3 to 4 days of work and my job was in jeopardy. That is why I started to panic yesterday when I saw spotting.
I also get regular bone scans, my last one was last year and I actually have denser than normal bones.
As for pregnancy, I will simply say that is not possible.
As Turbo Mammoth and my doctor pointed out yesterday, spotting on depo really isn't all that unusual. I just went into panic mode because the notion of having those horrible periods again freaked me right out.