Implantation bleeding? Update from my previous question?

Yes is it possible I know a women who ovulate a week before her period starts and now she pregnant. That a trip huh cause every women not the same . Like me i ovulated on cycle day 8 i knew new that until this month when I started using BBT i always thought I was either cycle day 14 15 or 16 i had been missing my chance the whole time I cause it was meant because I just decide to give up on TTC because the guy that I'm with is a little funny acting sometimes I am not sure if he ready anyways good luck on TTC.