Anyone ever have their app get their ovulation date wrong? It came actually happened 2-3 days later instead?

So the app said I ovulated on the 26th of July but I still test “high” as of The 26th and they say a woman normally ovulates 24-36 hours after that. So is it possible my app is off by 2-3 days of my ovulation date? I had some pinkish creamy stuff come out starting yesterday and thought it was my period but still nothing. Wondering if it could be implantation bleeding? Anyone ever have this happen to them? Any insight would be greatly appreciated!

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