In women who have a regular menstrual cycle of 28 days, the fertile period starts on the 11th day from the first day that menstruation occurs and lasts until the 17th day, and these the best days to get pregnant. However, in women with irregular menstruation, calculate the fertile period should be made taking into account the latest 12-month cycle.
Moreover, in case of irregular menstruation, it is important to be able to identify some signs and symptoms that can arise that are indicative of the fertile period as the presence of vaginal mucus similar to egg white and somewhat thick, slight increase of body temperature, increased libido and discomfort in the lower abdomen.
Thus, it is possible to know that the fertile period is near and so do the calculation to know the exact date, as well as the ovulation period.
fertile period in the regular menstruation
In women who have a regular menstrual period, ovulation occurs around day 14 of a normal cycle of 28 days, and the fertile period will take place between 3 days before and 3 days after that date.
For example, if menstruation has come on the 10th, the woman's fertile period after menstruation will be between 20 and 26 and the most fertile day will be on 23, it will be the central date of the fertile period.
fertile period in irregular menstruation
The fertile period in irregular cycle is difficult to determine and its calculations are not safe for those trying to conceive or who do not want to become pregnant because as menstruation does not appear always on the same days, the accounts can be wrong.
However, you can get an idea of the fertile period in the event of irregular cycle, noting, for one year, the duration of each menstrual cycle and then subtract 18 days to the shortest cycle and 11 days to longer cycle.
For example: If the shortest cycle was 22 days and the longest cycle of 28 days, then: 22-18 = 4 and 28-11 = 17, that is, the fertile period is between 4 and 17 days cycle.
A more accurate way to determine the fertile period for women who wish to become pregnant, is to make the ovulation test, which can be found in a pharmacy, and be attentive to the signs of fertile period, as similar runny egg white and increased desire sexual, for example.
fertile period in women taking birth control
The woman who takes the pill correctly, has no fertile and can not become pregnant while taking this medicine. However, if there is forgetfulness in taking the pill, the woman can get pregnant if she has unprotected sex.