Help! What is happening?

I was previously on depo. My last injection was 7th Dec 2018. My AF is back but not yet regular. I had my last AF 18 - 21 June. Which was a suprise as the previous cyle was only 13days long. Since then I have been taking clearblue digital tests. Yesterday and today it has been flashing smiley. However, yesterday and today I have also had mild cramping, spotting and pelvic pain. I am worried AF is coming again a

fter 2 weeks! Its not currently alot. Started pink and brown but some small amounts of red mixed with CM. I know you guys aren't doctors but has anyone else experienced this? Could it be ovulation?