Cycles so messed up?

Cy
So I got off depo 7 months ago I had a period right away like a full period! Then on the 7th month I totally had no period only had brown spotting twinged with a little red for two days then 3 days ago I took an ovulation test and I was ovulating also had a clump of like mucus come out so I was pretty sure I was ovulating then three days later I had cramping and back pain and sore boobs so I thought for sure I was going to start my period today but I didn't and the cramping stopped and all I have is a little back pain everyone kept asking why I didn't take a pregnancy test well it's hard to believe I would be pregnant when depo messes you up so bad even though I had a period and it all of a sudden stopped I just don't feel like it could I be having early AF symptoms? Like month late AF symptoms