Someone help!

Please hear this out and help me!! I know this is long, but please. Okay, so my boyfriend and I had sex the 25th of June using the withdraw method. He knew EXACTLY when he was about to cum, and pulled out. Then we did that again the 5th of this month, then again the 9th. When we first did it the 25th, eve said it was the day after my fertility cycle ended, so I wasn't fertile anymore. I thought it was safe. Then my period was supposed to start the 7th, which was honestly kinda early, not my usual cycle (I just started using eve last month and logged in that period). But anyway, my period still hasn't started. And each day, I postpone another day my period is supposed to start on eve, and my fertility days jump with it!! Now it's saying I was fertile the 25th!! What???? I understand the whole story of pre-cum, how it can still have sperm and still travel in me. Although I know for a fact he pulled out in time, I know the story of pre-cum. But I mean, I trusted this app!! I thought I wasn't fertile!! So now, if he did fertilize me that day, I'd be like 2 weeks pregnant? But I'm not showing early signs or pregnancy nor signs of my period. Why? Could I even be pregnant? Is my period just late because of sex? What's going on? Please, please let me know if you're a professional with this stuff.