Period due in 4 days. genital felt iiritated after intercourse used condom w/n-9. now white mucus all over my labia minora & dripping feeling. causes?

Vaginal discharge: There are too many possible causes of increased vaginal discharge to be very helpful about the cause. "Irritated" genitals often suggests yeast infection, but N9 can do this and usually scant discharge with yeast. If strong odor, maybe bacterial vaginosis. Infections including STDs, if at risk. Hormone imbalanc. Any new, unexplained vaginal needs professional evaluation, so get care soon.