12dpo had sex & light bleeding occurred but temp was still high?

Angela • 44 yr old Mother of 3 older children to previous marriage & a 4 year old boy to my partner of 5 yrs, ttc no 5 for 2 years, did fall pregnant last year in June but lost the baby at 12 weeks. Now Just had my baby boy Heath William 13/03/20 😍

Not sure if I’m out, this has happened before & then got af 2 days later 😩 but my temp hasn’t really dropped that much? Would you class it as spotting? Plus a lot of ppl on here say I ovulated CD 15 not CD 13? So that would make me earlier?