Fertilized egg and IUD insertion?

Has anyone found out they were pregnant after getting the IUD inserted from sex and ovulation a week before insertion?

I have an 11w old baby and SO and I recently started having sex again but we either used a condom or he pulls out. I already got my first pp period.

Here’s the thing, im supposed to get the IUD inserted tomorrow so I downloaded a period tracker and plugged in my first pp period, turns out that two of the days we did pull out happen to be within the predicted ovulation window. That was about a week ago so too early for an accurate test result. So now im nervous! I know the app is just a prediction and that pull out Decreases the chance of getting pregnant. I guess im just wondering if it’s even possible for an egg to implant if it was fertilized before the IUD? I’d hate to have to get the IUD removed if it resulted in pregnancy but at the same time, i dont want to keep risking pregnancy if it hasn’t happened. Has this happened to anyone?