Ay sis, five days late is still within normal range, especially if your cycle has been regular before, sometimes stress, diet changes, or even weather can shift things by a few days, kaya hindi mo pa kailangan mag-alala! Since you mentioned wala kayong intimate contact that month anyway, pregnancy is unlikely, pero kung umabot na sa two weeks late or if you notice other changes like spotting or cramps, better check with your OB para ma-rule out other causes and ma-ease your mind. Hoping your period comes soon!