When is the best day for sex to avoid pregnant and how can you no when your ovulation period?

The best day to have sex to avoid pregnancy is during the "infertile window" of your menstrual cycle. This is the time of the month when you are least likely to ovulate, and therefore least likely to get pregnant. The infertile window typically occurs between days 8 and 19 of your menstrual cycle, counting from the first day of your period.

However, it is important to note that the infertile window is not a foolproof method of birth control. There is still a small chance that you could ovulate during this time, and therefore get pregnant. If you are trying to avoid pregnancy, it is important to use a reliable method of birth control, such as condoms, birth control pills, or an intrauterine device (IUD).

Here are some tips for tracking your ovulation period:

* Pay attention to your menstrual cycle. The length of your menstrual cycle can vary from woman to woman, but it is typically between 28 and 35 days. Ovulation usually occurs about 14 days before your period starts.

* Track your body temperature. Your body temperature rises slightly during ovulation. You can track your temperature by taking your temperature first thing in the morning, before you get out of bed. A rise in temperature of 0.2 to 0.5 degrees Fahrenheit (0.1 to 0.3 degrees Celsius) may indicate that you are ovulating.

* Use an ovulation predictor kit. Ovulation predictor kits measure the level of luteinizing hormone (LH) in your urine. LH levels surge just before ovulation. You can use an ovulation predictor kit to predict when you are most likely to ovulate.

* Monitor your cervical mucus. Your cervical mucus changes consistency during your menstrual cycle. It is usually thick and sticky at the beginning of your cycle, but it becomes thinner and clearer as you approach ovulation. When your cervical mucus is thin and clear, it is a sign that you are fertile.

If you are trying to get pregnant, it is important to have sex during your fertile window. This is the time of the month when you are most likely to ovulate, and therefore most likely to get pregnant.