ovulation confusion?'!

Emma ❤️💛💚💙💜 • Me and my wife are TTC baby number 2 via artificial insemination! :)
So I got a positive ovulation test yesterday. The line was darker than the test line. We did the deed, then I did another ovulation test this afternoon, and the line was even darker. I didn't think that was possible. The line is so dark it's almost black 😂
Would I class yesterday's opk as positive if today's was darker?? We dtd today too.