Missed three pills, can I be pregnant from precum if I made up the pills?

I missed three pills (irresponsible, I know) but made them all up. My bf and I had sex May 31 (after I messed up my pills) and he didn’t cum in me, he pulled out. I know precum is a real thing, which is why I’m worried. I’ve heard people say if he pees or cleans himself since the last time he ejaculated, there’s not a risk of sperm in precum. But what are my chances of being pregnant? I’m supposed to start the 15 and i’m feeling like i’m gonna start but i’m still kind of worried.