Could These dates end in a BFP?

Alexis
Were not fully TTC, the 8th was unprotected and the 19th was. Pretty positive I ovulated the 15th or 16th and am pretty sure I had a tiny bit of bright pink implantation spotting yesterday (I had it with my son and this was pretty much the same) with mild cramping today. Has anyone gotten pregnant from ONLY making love 7-8 days before O? Thanks!