Why do I not have my normal pms symptoms yet??

My period is supposed to start in 7 days, and usually by now I am getting severely sore boobs and I haven’t. I’ve been having moderate headaches everyday which is unusual but that’s it. Could not getting symptoms of your period coming be a sign of early pregnancy? Last month I had sex and the condom broke but I got my normal period on the calculated day 4 days later. But i’m still overly stressing about this, I just dk why I’m not getting any pms symptoms?? I’m only 17 and tomorrow I have a doctors appt to get on birth control for the first time so I guess I will find out there but i’m so paranoid 😭