A follicle of 22 x 16 mm is normal, an oval-shaped mature follicle with a flattened shape, but it does not interfere with normal conception. The size of the follicle is subject to error due to the measurement process of different ultrasound technicians. A normal mature follicle is round or oval in shape and transparent. The follicle can survive for about 2 days after ovulation and you can arrange sex appropriately according to the ovulation time. As long as there are no other factors affecting conception, such as endometrial thickness and tubal patency, conception will be normal. After the end of menstruation, the estrogen level in the body starts to rise and the follicles start to develop. After about 8-10 days, the follicles mature and ovulation occurs. The development of follicles is influenced by the length of the menstrual cycle as well as the body’s nutrition and hormone levels, etc. High quality protein foods and folic acid can promote follicle development.