In general, before resuming your oral contraceptive after stopping for a period of time, the most important thing to do is to rule out that you are not pregnant.
This is especially because you’ve stopped taking the contraceptive pill for the past 3 months, and have not had any periods yet.
A delay of two to three months before having a period is not unusual after stopping the Pill, but it would be best to seek out a formal consult with a doctor to provide further advice re: the above.
This is also so that he can determine whether there are any other underlying problems associated with your lack of periods, before restarting you on the oral contraceptive pill.
Cheers
