My chart...AF coming??

Sooo FF had my O day on CD 16....but I swore it was on CD 13 bc of my EWCM and the burning sensation in my back I usually get during O...so I did the override thing on it. Well today is CD 14 IF I was correct on my O day...but since Tuesday I’ve had spotting and veryyy light bleeding on and off. I had a tampon in yesterday for 8 hours and it was only a couple of pink spots on it. I put one in today also bc I definitely expected AF to come full force with cramps and everything....but no cramps. Just some slight discomforts, haven’t checked tampon yet. I always get cramps and bright red blood on the day of AF. Maybe it’s just staring off slow?? My temp hasn’t went below cover line yet and it usually does by 14dpo. Maybe FF was right and I ovulated on CD 16 and am just spotting before period?? What do you think?