Worried I'm Pregnant

So, I started birth control last month but was bleeding for 2 weeks during. the DR. said that the pill did not suppress the egg like it was supposed to and did not work effectively. after getting my period I had unprotected sex using the pill out method with having only taken 3 days of the pill. this also landed on a fertile day according to the app. I'm wondering how early one can experience pregnancy symptoms? Or if I could in fact be pregnant right now. 10 days away from period. thank you!