Depo has given me morning sickness ???

So I got my second injection on the 30th jan. Since the injection I legit have been so queasy. In the morning I cant brush my teeth and I feel so sick i cant eat. Before I had the injection I took a pregnancy test on the 27th jan and it was negative. But I had a really strange period where it was super light and then I got brown discharge after. And usually I have super heavy ones .

Also a bit TMI but when I orgasm I also get really bad period cramps.

Has this happened to anyone else ?