Try to do unprotected sexual intercourse around ovulation time by using ovulation prediction
kit for highest possibility of pregnancy and stop taking Duphaston tab after that.
Actually ovulation occurs approx 14 days before the due date of period. So calculate your timings and prepare for that.Also take Vit-E & Folic acid
supplements in preconception period.
Consult with your doctor to rule out underlying causes of irregular period like thyroid disorder
,stress, wt gain/loss,ovarian cyst
,irregular eating habit. Do USG lower abdomen with LH/FSH & Thyroid test.
Take healthy diet,control body wt,avoid stress and proper sleep.