Help please me......

Nicole • ✨TTC #1 since 10/1/18✨👼🏻

I am 11-13dpo between the two apps I have glow and fertility friend. I am suppose to see af today and she is yet to visit I usually start early morning or early afternoon with mad cramps right before and have a pretty regular 28 day cycle. I haven’t had much for symptoms of af arrival so I am confused. Went to bathroom after work tonight at home and seen this when I wiped, could this be implantation? I don’t typically ever spot so this is new to me. Any insight? I’ll post my bbt chart from FF that shows as 13dpo today. Glow says 11!