Pre cum

Has anyone got pregnant from pre cum me and my bf has been doing the pull out method and he told me he hasn’t cum in me (tmi sorry) and I got a positive test today ! Is it possible to get pregnant with pre cum?

Edit to add my bf is 27 and I’m 18 he wanted to try for and I didn’t I was ok BC (iud) but it implanted in my uterus so I got

It removed a few months ago ! I just wanna make sure he’s not lying to me and didn’t pull out and said he did