Dumb Question?!?!?!

Jessica • Married sept 12 2015 ttc for #1 since june 2014 BFP July 2016 due March 23rd 2017

But im on CD 15. AF not due till the 16th. If i conceive this week. (took an opk and I'm about to ovulate either today or tomorrow)

I would test like on the 12th right?