To conceive normally, women need to ovulate normally, generally speaking, menstrual regularity, women with normal menstrual blood volume, the vast majority of women will ovulate, then, if menstruation is irregular, will women ovulate? What methods can be used to monitor ovulation? Let's take a look at it today.
How to calculate the ovulation period?
If a woman has regular menstruation, it is easier to estimate the time when ovulation may occur. The ovulation period is roughly estimated to be a 14-day reduction in menstrual cycle days. If menstruation comes once every 28 days, the ovulation day falls about 28-14 = 14, that is, the 14th day of menstruation; If menstruation comes once every 32 days, the ovulation day falls about 32-14 = 18, the 18th day of menstruation.
Regular menstruation vs irregular menstruation
We usually say that regular menstruation refers to every 28 days to 35 days, menstrual bleeding time is maintained for 3 to 5 days, and the total bleeding volume is 20-60mL, which is a normal bleeding volume. If the menstrual cycle interval is less than 28 days or more than 35 days, it means that the menstruation is irregular, or the interval between menstruations is different, more than 7-10 days, which is also called menstrual irregularity.
What are the ways to check for ovulation?
Some people with irregular menstruation may still ovulate, so we can detect whether there is ovulation in the following ways.
Basal body temperature measurement (low accuracy)
After ovulation, the progesterone rises, acts on the body temperature center, and the body temperature rises by about 0.3-0.6 degrees Celsius after ovulation. Therefore, during the normal ovulation menstrual cycle, the connection of basal body temperature will show a biphasic curve (high and low temperature two-phase change).
Measurement with ovulation test strip (high accuracy)
The concentration of luteinizing hormone (LH) peaks during the ovulation period, and the ovulation dipstick is used to determine whether the luteinizing hormone in the urine has reached the maximum amount to determine whether it has entered the ovulation period.
Start using the test strip 3-4 days before the estimated ovulation date, and it is recommended to test once a day for more than a week. Menstrual irregularities are recommended to extrapolate the shortest period and monitor ovulation.
Serum progesterone concentration measurement (high accuracy)
After ovulation, the follicle forms a luteum and begins to secrete progesterone, so the concentration of progesterone in the serum can be used to confirm whether there is ovulation. In the middle of the luteal body, serum progesterone > 3 ng/ml, or 5 ng/ml> of serum progesterone measured at any time, can confirm ovulation.
Ultrasound is used to track changes in follicles and lining
(High accuracy)
Through the vaginaL ultrasound to measure the size of the ovarian follicle and the thickness of the endometrium, in order to observe the timing of ovulation of the ovaries, as the follicle becomes larger, stimulated by the secretion of estrogen from the follicle, the lining will thicken, and the lining after ovulation, because of the action of the lutein secretion of progesterone, the intimal whitening phenomenon is presented under ultrasound.
How much is known about ultrasound examination during pregnancy
If no ovulation is found with the above tests, it is usually necessary to do some hormone tests, including follicular stimulating hormone FSH, luteinizing hormone, estrogen, thyroid-stimulating hormone, prolactin, egg stock (AMH), etc. to further find the cause, so as to take an appropriate solution under the advice of the doctor, so as to achieve the purpose of pregnancy as soon as possible.