When would I have likely conceived?

Hey All - so I am a bit confused I posted a few weeks ago and tests were determined to be evaporation lines. I tested once more a few days later and it was negative. I stopped testing on the 27th.

I just took 3 tests today as I tossed my cookies this morning. And all three one FR and 2 Amazon cheapies are very obviously positive (will not post per guidelines).

Is it possible I conceived during my assumed fertile window (also got positive ovulation tests) - I know the app is just a guesstimate but I was also tracking CM etc. or is it possible we conceived on the 2nd.

Which is more likely?