Need advice please!! Ovulation or implantation?!

So Glow said my ovulation date was on 11/11. We bd on 11/5 and 11/11 ( I know I am slackin this month!) I had a 30 day cycle last month which is why it estimated my ovulation date to be cd 16 (11/11). My cycles range from 26-29 days with outliers of 30 and even 24 days from time to time. My question is... Right after sex on 11/11 I had the slightest pink/brown when I wiped. I am wondering has anyone ever had this on the day of ovulation? Or could this possibly be implantation bleeding from bd on 11/5?? if my ovulation date was that early it would have meant a 24 day cycle which is rare but happens for me. Please ladies what do you think?!