When is the ovulation period when the menstruation comes on the 18th

The ovulation period is a special period for women. During this period, the female reproductive system will discharge an egg. If the egg can successfully combine with the sperm, then the woman can successfully conceive. Therefore, the chance of conception during the ovulation period is very high. So, if your period comes on the 18th, when is the ovulation period? The following will introduce relevant knowledge to you!

1. When will ovulation occur if menstruation comes on the 18th?

Generally, the ovulation period is 14 days before the menstrual period. This method can only be calculated for women with regular menstruation, or you can remember the first seven days and the last eight days of the menstrual period. These are the ovulation times. Knowing the ovulation period, you can take corresponding measures.

Before a woman's ovulation period arrives, she will notice some subtle changes in her body. Common pre-ovulation symptoms include increased body temperature, thinning and transparent cervical mucus, and dilation of the cervical opening.

2. Symptoms before ovulation:

1. Rising body temperature: When ovulation is approaching, a woman's body temperature will rise. This is because the hormone fluctuations in the body affect the woman's body temperature regulation center. Generally, the basal body temperature measurement method is used. After ensuring that you sleep more than 6 hours the night before, you should use a thermometer to measure your body temperature the next morning and keep a record. If you find that your body temperature has been higher than the previous six days for three consecutive days, it means that the ovulation period is basically over.

2. Opening of the cervix: During menstruation, due to the influence of sex hormones, the cervix may undergo three changes:

(1) When the menstrual period ends, the cervix is ​​lower than the pelvic cavity;

(2) As ovulation approaches, the cervix rises from the vaginal opening and becomes as soft as a sponge. The cervical opening begins to open and opens to its maximum during ovulation.

(3) After the ovulation period, the cervix returns to its original position, becomes hard, and the cervical opening closes.

3. Which day of menstruation is the ovulation period

For women with normal menstrual cycles, the ovulation day is generally calculated from the first day of the next menstrual period. Counting down 14 days or subtracting 14 days is the ovulation day. The 5 days before ovulation, ovulation day, and 4 days after ovulation, the sum of these three times is the ovulation period.

For example, if the menstrual cycle is 30 days, and the first day of this menstruation is September 1st, then the next menstruation will be October 1st. Counting back 14 days from October 1st, September 17th is the ovulation day. The ovulation period is 5 days before ovulation, ovulation day, and 4 days after ovulation, which is the ten days from September 12th to September 21st.