Do pms symptoms change or am I pregnant?

I am about 5 or less days away from my period and the only symptom I’ve had is really really sore nipples. like wanna cry taking off my bra, sore. My boobs have never hurt before at any point. But I’ve taken 2 tests and they’ve been clearly negative. One was FRER. Does that mean a new PMS symptom or is there still a chance?