the pill and pregnancy

I feel so silly to ask this because I always face palm when I see similar questions. 
I started taking birth control on Monday (the day after the last day of my period so this is my fertile week). I had unprotected sex Tuesday and Wednesday using the withdrawl method. I guess what I'm asking is if any other of you ladies did something similar and ended up pregnant. 
I know that there's definitely a chance I could end up pregnant from this because of the whole first week/ month on the pill isn't the most affective thing. 
Anyways, I would really appreciate no judgement because we are aware of the high risks. Thanks 😁