Natural contraception by calculating the day of ovulation

The article is professionally consulted by Master, Doctor Nguyen Thi Hong On - Department of Obstetrics and Gynecology, Vinmec Phu Quoc International General Hospital.

Unintended pregnancy not only affects work plans, turns life upside down, but also affects family happiness. And the simplest but most effective thing is natural contraception, one of the effective methods, without using any drugs or means of support, that is to calculate the day of ovulation to prevent pregnancy.

Calculation method Step 1: Women need to track and record the days in each menstrual cycle for at least 6 months. The first day of monthly menstruation is counted as the first day. This will not only help prevent pregnancy, but also check your reproductive health. Step 2: Then apply the formula to calculate the day of ovulation to actively prevent pregnancy as follows: Subtract 18 from the date range of the shortest menstrual cycle. For example, the shortest menstrual cycle is 26 days, then take 26 - 18 = 8. That means from the 8th day onwards the possibility of conception is higher.
Similarly, subtract 11. For example, if the interval between the longest periods is 30 days, then take 30 - 11 = 19 days. So the dangerous time is calculated from the 8th to the 19th day of the menstrual cycle.
If a woman has more than 2 cycles that are shorter or longer than that, then the standard method of calculating days will not work.
In summary, if the interval between the longest and shortest menstrual periods is 31 and 26 days, respectively, the fertile period is from day 8 to day 21. Subtracting those days is the safe day. your whole.
To make sure that you are not pregnant, women should delay 3 days from the first fertile day of the cycle. As the example above, the 8th day onwards is a dangerous day, then 3 days back is 8 - 3 = 5, women will abstain from sex from the 5th day, the safety will be higher.
Also, add 3 days after the risk date at the end of the cycle. That is, from day 21 + 3 = 24, the guarantee of contraception is higher.

Standard day method This method only applies to women with regular menstrual cycles from 26 to 32 days. Accordingly, the first day of the menstrual cycle is counted as day 1. The days are considered. is dangerous, avoid intercourse is from the 8th - 19th.

Calculation of safe days is essentially to avoid egg meeting sperm. In general, women ovulate in the middle of their cycle. In which, the first day of the cycle is counted as the first day of menstruation. If husband and wife have sex on these days, the probability of conception is highest and the fetal development stages will be the best:

The time of conception can start 3-5 days before ovulation because sperm can live in cervical mucus for 3-5 days. For women, conception will end 24 hours after ovulation, meaning that after ovulation, the ability to conceive can still occur within the next 1 day. In order for couples to recognize the fertile time, the menstrual cycle has been divided into 3 phases:
Pre-ovulation: non-conceiving phase. 5-7 days mid-cycle: the conception phase, which includes the few days before and the day after ovulation. Post-ovulation: non-conception period. During the fertile period, the couple should avoid intercourse. If so, use safety precautions such as using a condom, spermicide, or vaginal ejaculation (less effective).
*** Some notes on natural contraception by calculating the day of ovulation, natural contraception without safety measures is usually only relative. Many people believe that having sex during menstruation will not make a woman pregnant. Sex on red light day pregnant?
However, there are still many cases where the possibility of conception is still possible. Because each person's menstrual cycle is different and so is the time of ovulation. Because of that, the possibility of women getting pregnant even during sexual intercourse on a red light day is quite high.
Depending on the location and hormones of each person, there are many cases where the menstrual cycle will last longer. Many women, although their period has been clean, but blood still oozes a bit due to the secretion of the cervix, but you still mistakenly think that it is still a menstrual period. If the couple has sex at this time, there is still a possibility of conception.
To prepare for a healthy pregnancy, both husband and wife should check their reproductive health 3-5 months before becoming pregnant.
The wife should:
Get vaccinated before pregnancy (especially against rubella because rubella in pregnancy is extremely dangerous ) Genetic testing to screen for genetic diseases before pregnancy Check for secondary infections In particular, women over 35 years of age, if they want to become pregnant (especially if they have never been pregnant), will have to have a very detailed health check because pregnancy at this age often problems: Ovarian failure, premature birth, higher risk of birth defects, placenta previa, preeclampsia. The husband should:
Check reproductive health, detect diseases of testicular atrophy, physiological weakness, weak sperm... Sexually transmitted diseases, especially those that cannot be cured, are extremely dangerous. Vinmec currently has many comprehensive health care programs for couples, pregnant mothers and their unborn babies, including basic pre-marital examination packages, advanced pre-marital examination packages, and maternity packages. . Vinmec has a team of experienced doctors in the fields of obstetrics and gynecology, IVF, stem cells, gene technology, capable of synchronously and comprehensively deploying the most advanced assisted reproductive techniques today.