is it normal?? Pms or paranoic?

Usually my breasts don't get sore/big until a few days before I'm expecting my period. Is it normal for a woman to get sore breasts 10 days before her period? I did unprotected sex four times, last week three times and this one,once. But he never came in me. Also,I started some aerobic dance (A thing that I never did before).

I took a test and it was negative, but my breasts are really sore.

Should I be worried?