Thank you for your questions. The following answers regarding your current queries are just general descriptions due to the limited information provided by you. Click on this link (DoctorOnCall) for a private consultation with our doctors.

Based on your description, there are several causes of late period such as:

• Use of emergency pill may delay your period up to one week. If you still have not seen your period for 3-4 weeks, you are required to take a urine pregnancy test.
• Emotional stress
• Pregnancy
• Weight too light or too heavy
• Exercising too much
• Problems with the ovary such as Polycystic Ovarian Syndrome

Delayed period does not affect the efficacy of the pill. The pill’s efficacy may be affected if it is not taken within 72 hours of unprotected intercourse. In order for us to provide you with an accurate choice of treatment and management, we need additional details to explore further into your current complaints. Therefore, we greatly suggest that your girlfriend refer this to your nearest medical doctor. You may also click on this link (DoctorOnCall) to speak with our doctors online. We assure you that our conversations are kept in confidentiality unless additional consultation needed with other medical parties. Thank you .