Hi, Thanks for posting in HCM. I have read your description and understand your concern. What your girlfriend has done is right by taking a proper dosage of Nordette. Since vomiting has happened after 3 hours following last dose, there should be nothing much to worry as most of the pill would have been absorbed. Some of them would experience certain side effects like headache and discharge after taking these type of pills since they are hormonal in nature. She needs to get withdrawal bleeding within 3 weeks, which would suggest that she is not pregnant. In case bleeding doesn t happen by 3 weeks, she needs to take urine pregnancy test and seek medical attention promptly. Hope the information provided would be helpful. All the best.