Missed periods for 2 months, consulted doctors , but no

Patient: HI,I have missed my periods 2 months now.Consulted doctor, they gave me Novelon tabs, started using from last 7 days (20 th july), still not got periods… when can I expect periods. Do I get periods only after finish the Novelon 21 tabs course.Please make me understand.thank youEDIT:So. U want me continue till I finish 21 tabs.. Or to stop now..please clarify sir

Symptoms: NO