Follicle monitoring of 17mm to 14mm in two days is not a guarantee of pregnancy, it is related to the actual condition of your body, but the current level of monitoring is within the range of conception. Follicle monitoring begins when the follicle starts to develop, the initial stage is about 10mm, later with the development of time, under normal circumstances, the follicle will gradually grow, generally about 17mm is the diameter of the mature follicle. In this case, a 14mm follicle after two days indicates that the follicle is decreasing in size, and the chances of getting pregnant are relatively lower. It is recommended that both spouses go to the hospital for a pre-pregnancy eugenic health checkup to assess whether they are fit to get pregnant. Quit smoking and drinking, develop good living habits to maintain good health, avoid prolonged exposure to radiation or pollution, and get out of toxic and hazardous work environments. Women should take oral folic acid starting 3 months before the planned pregnancy to prevent neural tube defects.