First time on bc

Ok so I’m almost finished with my first pack of sprintec bc pills. My period is 15 days late and tomorrow I’ll be starting the last row of pills. I noticed my nipples been hurting for like a week or so now.. does that mean my period is finna come on orr? (Oh and im not pregnant I had to take a pregnancy test to get on the bc and I haven’t had sex since befo that)