There is a sour smell in the vagina during ovulation

The exact cause of sourness during ovulation isn't entirely clear, but research suggests it may have something to do with the movement and binding of eggs in the fallopian tubes. When an egg is released from the ovary into the fallopian tube, it is subject to pressure and pressure from the fallopian tube fluid, causing the egg to move within the fallopian tube. During this process, the egg may meet the sperm and form a fertilized egg. If the fertilized egg successfully combines in the fallopian tube, it will begin to implant in the uterus, eventually forming a new life.

If a woman feels a sour odor down there during ovulation, it could mean she's approaching the time when her egg and sperm will meet. This phenomenon usually occurs within 1-2 days after the egg is released into the fallopian tube, that is, within a few days before and after ovulation. If a woman experiences discomfort during ovulation, it is recommended that she pay close attention to her symptoms and consult a doctor if necessary.

In addition to sourness during ovulation, women may also feel sourness at other times. For example, women may experience a sour taste during the middle days of their menstrual cycle, which is often referred to as "menstrual cycle sourness." This phenomenon may be related to women's hormone levels, but the exact cause is not entirely clear.