Clarification

Hey y’all. So I’m 49 days since my last period. Had sex during ovulation period twice. Once before ovulating and actually on ovulation day. Used pre-seed....and tested yesterday and was negative. (Today’s one week since I ovulated) yesterday had very light brown with a twinge of pink discharge.....thought I was going to get my period and there’s nothing there. Even after wiping.....thoughts? Did I test too early? Possible implantation bleeding? Or should I just expect AF? Any thoughts/comments would be super helpful!