So I've been on the depo shot for awhile now. The first week of October I was due for my third round but never got it. The entire time I've been on depo I haven't been having protected sex. After October 1st I started noticing light spotting. 1-2 drops the size of rice at the biggest. It went on for a couple days with some cramps but after the 3rd day I didn't have any spotting just cramps. Now I have little to no cramps, and noticed I've been getting a little nauseous by certain smells. Any thoughts?