My girlfriend 18f had light spotting and slight cramping starting from 12 days until her period is supposed to happen, spotting stopped after 3 days but the cramps are still there. She has extremely regular periods (on time or within a few days without exception) and never has had these symptoms before. We usually start without a condom and get one midway through. Her period isn't due for another week, wondering about the probability of her being pregnant/if we are just being paranoid.