what are the chances i get pregnant

im on the pill for some months now, today i took my 4th pill of my new pack and it’s been 3 days since my period ended. today while having sex with my boyfriend, we heard a snap he immediately pulled out, his dick had went trough the condom. he came in the condom a little bit before, i asked him and he told me he wasn’t even in me yet at that time and if he was in was only like a inch. our condoms have spermicide on it, what are the chance i could be pregnant