I have been on the Depo shot for 2 years now, and my period stopped almost instantly. The only time I bleed now, is when I’m about a week out from my next shot. And it is always extremely light spotting. May last shot was in May and I am not due until the end of July. But over the last few days I have had some very light bleeding. It’s brownish in color and it has been getting worse. I have no pain, cramping, bloating, urgency to pee, no other issues or symptoms. My boyfriend and I only have intercourse on the weekends, and he does not always make it to climax, and when he does he pulls out; we don’t use condoms due to me not having a period and both of us being STD free. I’m just wondering if it’s just a new side effect of my shot, or if I am possibly having implantation bleeding.