Hello Dr Owen I need information about contraception my wif

Patient: Hello Dr. Owen.I need information about contraception. my wife use the Marvelon pills for contraception she starts on 5th day of her periods. now her period days completed and she completes 6 days of pills and 7th day starts and more then half day passed (mean 18 hours of 7th day) kindly tell we need an other contraception or not. cause Marvelon leaflet tell us we wait 7 days after start the medicine.

Symptoms: Headache