Hi! My gf and I have had protected sex (did not ejaculate inside her) 1 week before her period and she got her period exactly the day it is suppose to be. Lighter than but still lasted around 5-6 days. Few days after her period ended she got spotting. But the spotting almost got her panty liner full. And still bleed a little after the day. Other symptom is her nipple is sore. Why is this happening? Is she having her ovulation period?