Need advice

Michaela
Ok so the other day I had posted in here but now my body is being super confusing. My periods are always on time at most 2 days late. Well here I am a week late but now have started with the lightest blood ever and no pain. It's only when I wipe and it's pink. It started last night before bed and is still doing it. Usually a few hours after I start my period it is much heavier and I am in so much pain I take medicine. Does anyone have a clue what might be happening here?