When couples live, for those who do not want to have children, they will take safety measures to avoid pregnancy and will calculate the safety period, but this is very important for the calculation of the safety period is accurate, if you want to have children, it is also helpful to calculate the safety period, so, how many days is ovulation during menstruation? And what to pay attention to? A. How many days after menstruation is ovulation? 1, the safety period is commonly known as the first seven days after the eight, 7 days before and 8 days after the period is safe, but this is only a general rule, refers to generally speaking before ovulation safe period for 7 days, after ovulation safe period for 8 days. If the menstrual cycle has been 28 days for a long time, then it can be treated as the first seven days and the last eight days, because this can avoid the 10-day danger period. 2. For a woman who often has short cycles, for example, a cycle of 21 days, then the ovulation day is around day 7, when there is no pre-ovulatory safety period to speak of, because at any time you may encounter the minimum pre-ovulatory period just before the end of your period. For such a woman, even if her period has just finished, she may be at risk of pregnancy. 3. For a woman who often has long cycles, for example, a cycle of 35 days, then the ovulation day will be around the 21st day, when the often delayed ovulation will make the post-ovulatory safety period undetermined. 4. Ovulation is calculated by counting from the first day of the next menstrual period and counting down 14 days or subtracting 14 days, which is the normal ovulation day for women, and then adding the ovulation day and its first 5 days and the last 4 days together, which is called the female ovulation period. If women want to get pregnant as soon as possible, they should clearly calculate their ovulation period, so that they can conceive and have babies normally. What are the precautions to take during ovulation? 1. The nasal mucus of women will decrease during ovulation, so it will increase the chance of bacteria invading the human circulatory system. Therefore, you should pay attention to protect your respiratory system to avoid bacteria and germs from entering your body and causing illness. 2, most women will have bleeding during ovulation, only some are obvious and some are not. This is the normal fluctuation of estrogen secretion in the body, of course, there are some people because of certain diseases, which will have to go to the hospital for examination. 3. For women who do not require pregnancy, pay attention to contraception during the three days before and after ovulation, because the egg can survive 1-2 days in the fallopian tube after being discharged from the ovary to wait for fertilization. Of course, if there are plans to prepare for pregnancy, then couples should choose to have intercourse during ovulation to be able to improve the chances of conception. If you are not planning to have a baby, then you should pay attention to the contraceptive work during the female ovulation period, such as trying condoms and taking birth control pills. But it should be noted that the artificially calculated safe period is only a relatively low probability of conception, not completely will not conceive, so in order to avoid unnecessary harm, no matter what time the friends who are not planning to have a baby should do a good job of contraceptive measures. 4, to have their own special towels, especially during ovulation can not use other people’s towels to prevent infection. In the shower with the flow of water to wash the private parts. 5. Drink enough water every day so as to reduce the bacteria breeding in the urethra. 6.It is best to make a habit of washing with warm water after each discharge to avoid intestinal bacteria from taking advantage of the opportunity to enter the vagina and cause inflammation. 7, usually when there is a lot of secretion, you can use a hair dryer to adjust to warm air after the shower to blow dry the pubic area, after the shower to wear underwear after the pubic area is dry. Now there are many people who only wear skirts at home without panties, or sleep without panties, which is better for the pubic area, allowing it to have the opportunity to breathe and dry. 8.Bedclothes should be changed frequently and kept clean. 9, it is best to wear absorbent and breathable cotton panties, in the hot season, it is best not to wear tight leggings, and try not to wear super short skirts when seated in public places to avoid letting your panties touch the seat. 10.If you have abnormal symptoms such as heavy ovulatory bleeding, you should go to the hospital in time to check whether it is caused by diseases and check whether you have cervical, ovarian or vaginal diseases.