Hey guys :) I need assurance lmao

So me & my boyfriend had sex last March 11. Inbetween rounds he would go pee & we would relax for a bit. Been doing it for like almost 5 years now & He said he was 100% sure about his pull out.

My due date was supposed to be on the 20th but unfortunately its the 24th. I'm a flight attendant, I "was", and we were removed from our position last 15/16th. I started to panic when I didnt have my period like everyday since the 21st. Idk if its the stress, like I dont want to get pregnant. I cant go out because were on lockdown which is also frustrating the shit out of me.

I'm just so scared. People been telling me to calm down because it will totally not come if I kept on thinking about it. I'm on home quarantine & theres nothing to do but to think about it. I hope this is just stress.