The chances of getting pregnant with a 16mm follicle are relatively small, basically not able to ovulate normally for conception, the mature follicle is between 18-25mm, as long as it is within the normal range basically can ovulate, but can not completely exclude abnormal conditions, such as ovarian non-ovulation and other symptoms. 16mm follicles are not fully developed and will not ovulate, and the quality of follicles at this stage is relatively poor, the quality of fertilized eggs may also be affected. The quality of the fertilized egg may also be affected, so continued follicle monitoring is needed and ovulation can occur when the follicle reaches 18mm or more in diameter. It is important to note that the speed of follicle development varies from woman to woman. If the ovaries are functioning well, the follicle development speed is relatively fast, which can lead to faster conception, so it is recommended to do a better job of body conditioning.