Help !!

Okay y’all so last month I got my period March 6. According to my app I ovulated the 19. Now I know it may be off but anyway I had unprotected sec multiple times in the month. Most being last week lol. Now I have no symptoms but I’ve decided to let my body do its then when it’s supposed to and not stress it. But.. let’s face it we always feel eager to test every month ! So with that being said my period is supposed to come in 2 days yet my app says pregnancy until 10 more days how does that make sense? Someone explain thank you 🙏 also last month I had a late period of 10 days late I got excited but still negative test.