Can I be pregnant?

Hi everyone.. I’m sorry, I never know what to think

I had a bf for 5 years, we tried to have a baby during 2 years and it never happened

We broke up and I’m with a new person

My new bf and I had sex 1 week and half ago and my period is late, since I never managed to get pregnant before I think it would be very unlucky for me if I’m pregnant but what do you think? Could I be pregnant?

(I’ll do a pregnancy test tomorrow morning)