You don’t need to stop dydrogesterone on the 14th day of insemination, you need to go to the hospital and take a blood test for HCG to confirm whether you are pregnant, and you can only stop the dydrogesterone tablets after you rule out pregnancy, you need to follow the doctor’s instructions. On the 14th day of insemination, the pregnancy test may not be able to detect pregnancy because the concentration of human chorionic gonadotropin in the urine is low, and it takes about twenty days to detect it. On the 14th day of insemination you need to go to the hospital for a blood test for HCG and progesterone, once pregnancy is diagnosed, it is important to see if the progesterone is low and if you need to increase the dose of progesterone. Once pregnancy is ruled out, you can stop taking dexamethasone tablets, and you will usually get your period within 3-7 days after you stop taking them. The 14th day of pregnancy test can not rule out pregnancy, need to be further examined under the guidance of the doctor to confirm the pregnancy, to avoid stop taking dydrogesterone tablets lead to biochemical pregnancy or miscarriage.