Help mee

The last time i had sex was april 7. (Used a condom and pulled out) Since then i had bleeding april 20-25 and also may 17-23. I have had multiple negative tests. I haven’t had sex since april 7 but my boyfriend and I have been participating in oral sex and fingering etc. (but no penis in vagina). Is it possible for me to still be pregnant? Everytime we do oral he will put a condom on 2 min before finishing to avoid a period due in a week