Hello dear I understand your concern You have PCOS and used duphaston to regularize period. Pregnancy test will give positive result when you period will delay by more than 7 days. So I would suggest to wait for period to come. If period will delay by more than 7 days then go for urine pregnancy test and or blood HCG test to confirm pregnancy. If pregnancy will not occur you can ask for drugs like metformin, clomifene, ovacare. Avoid stress, take healthy diet, drink plenty of water, do regular exercise and maintain weight according to normal BMI. Hope this may help you Contact further of if follow up needed Best regards Dr. Sagar