Before preparing for pregnancy without preconception examination, you can go to the hospital for examination, if the examination is normal, three months without pregnancy, you need to actively try and choose the right way, if a year without conceiving, you need to consider infertility, you need to be examined. Before preparing for pregnancy, you can usually go to the hospital for a preconception test to rule out genetic diseases as well as to avoid birth defects in the fetus, and at the same time, you can check whether there are any physical abnormalities on both sides. Liver function, blood tests, blood sugar, thyroid function and infectious diseases can be checked for both partners and adjustments can be made according to the results to ensure the best condition before pregnancy. At the same time, the couple can also be checked for infertility, such as reduced sperm activity or tubal obstruction, and targeted treatment to ensure that the chances of future pregnancy. If you are in good health and exclude infertility, it is very normal not to get pregnant in three months, you need to choose to have sex before and after the day of ovulation, and at the same time, relieve emotions, avoid mental stress, which affects the sperm and egg activity. But if you can’t get pregnant in a year, you can consider whether it is infertility, and go to the hospital for another examination.