Need advice

I had sex for the first time. I’m not on any birth control. We used a condom and he did not ejaculate inside me. Two days after sex I got my period.

Does getting my period 2 days after protected sex mean I won’t get pregnant? Or should I wait for my next period to be sure I’m not pregnant?

I’m day 14th on my cycle today but my nipples are sore. My next period will be on october 5 still. What could my sore breasts mean? Am I pregnant?