can I still be pregnant after planB & a period that came aft

I had my normal menstruation cycle on june 24th. once that ended, my partner and I had intercourse. he pulled out and used a condom. I was still stressing, so i used planB, a week later after using the morning after pill, I got an early period.(july5th). Now my nipples are hurting whenever I touch it & I'm worried on whether i can be pregnant or not and what the nipple irritaion is caused by.