Hi,
Welcome to ehealthforum,
You can consider taking the rest of the medicine in the correct dosage specified and wait for your periods/withdrawal bleeding to occur. If you fail to have them within 7-10 of taking the last dosage, then you should consider visiting your gynecologist/obstetrician for further evaluation to look for the underlying cause. You might be given repeat dose of same medication to try and induce periods or the treatment can be change based on examination and investigation results (hormonal and blood work-up, blood HCG/pregnancy test, ultrasound scan etc). Be in regular follow-up and monitoring of your treating gynecologist/obstetrician.
Take care.