IUD Help????

So I have the kyleena iud and got it inserted earlier in the year. I recently went to the doctor and they said it’s all good and in place. I have been having sex pretty often but he’s pulled out every time. My periods have been irregular so I can’t really tell whether i’ve missed it or not but what are the chances of pregnancy from precum or if he ever pulled out a little too late?? It’s probably just my anxiety but i’m just curious.