Should I be concerned about pregnancy?

Je

So my period is a day late… my bf and recently started having sex. We use condoms every single time, for the duration of sex. He never ejaculates while he is in me. Even though he is wearing a condom he still pulls out. We just try to be extra cautious. The condom he also never broken. How concerned should I be? I guess I’m just anxious because sex is new for me.