Hello and welcome to HCM
Emergency contraceptives like postinor and gyneacocid interfere with the normal uterine rhythm so, the menstrual irregularities can be due to these drugs.
Discontinue them for some time (eg six months) and use some other method of contraception
Observe if there is any improvement in the menstrual irregularity.
If still there is no response then consult your gynaecologist for further evaluation. A short course of progesterone
can regularoze the cycles. However, it has to be taken only after consultation.
An endometrial biopsy/ curretage may be required to see the status of the endometrial (uterine lining) and cause of irregular bleeding.
Thanks and take care
Dr Shailja P Wahal