i have some sort of cold and im taking antibiotics for it i started having or as i thought my period last sunday and it was very light and i never have light periods that started before i got my antibiotics and im still sick but now i have sore nipples i dunno whats going on and im not having sex at the moment, im on Bc pills but ive been using the same one's for basically a yr and this seems to have started just about the time i got sick could it just be because my body is fighting this sickness? becasue i know for sure im not pregnant im just wondering whats going on could somebody please help %-)