Hi there, Thanks for choosing healthcaremagic, in my opinion you need to take tablet deviry in order to maintain your monthly cycle, it is just a natural hormone progesterone, that you need for having periods regular, BUT remember that progesterone does not help you with ovulation, in order to maintain fertility, you need to take other methods that can help you ovulate which include medical treatment and other interventions. If you continue this tablet alone then it will act as a contraceptive, but as mentioned earlier if you use ovulation induction methods as advised by your doctor this deviry will help to maintain your pregnancy once your have conceived. have a good day and feel free to ask any questions. Regards