Need opinions

So I’m 33 days “late” my ovulation is pretty out of whack. My fdolp was July 27. My health app said my next period should have been last week or the week before. If it was supposed to be last week then I would have ovulated around the 12th. I BD on the 12th and 17th. No lines showing up on tests and have had on and off slight cramping. Not even slight spotting. When would I get a positive or even have a start of one if conception was the 12th? Because I’m really confused on what’s going on. My periods have been fairly normal the past 4 months.