advice?

Brooke
So I've been taking this bc for about 6 months now. I'm starting my third week on this pack tonight but recently like my nipples have been hurting, not any other part of my boob, and I've been a little crampy. Do you think this is normal? I had sex on Tuesday and Saturday of my first week but I haven't had sex since then and we used a condom and it didn't break both times. Does anyone know what could be causing this?