Having intercourse during ovulation is an important step in getting pregnant, but not all intercourse during ovulation will result in pregnancy. Although pregnancy is a complex process, here are some reasons why you may not get pregnant during intercourse during ovulation:

2. Poor sperm quality: Sperm quality refers to whether the sperm’s chromosome number and structure are correct. If the sperm quality is poor, such as teratozoospermia, it will be difficult to get pregnant even if you take measures to have sex.

3. Female reproductive tract problems: Female reproductive tract problems, such as reproductive tract stenosis, obstruction, infection, etc., may lead to inability to get pregnant during sexual intercourse.

4. Female cycle issues: Different times in a woman’s menstrual cycle may prevent a woman from becoming pregnant. For example, if a woman has a long menstrual cycle, she may have a shorter safe period before her next period, making it difficult to get pregnant.

5. Improper sex life: In addition to having sex during ovulation, improper sex life may also lead to difficulty in getting pregnant. For example, having sex that is too frequent or too vigorous may cause damage to the female reproductive tract, which may affect pregnancy.

Therefore, if you want to get pregnant, it is recommended that both couples get checked to see if there are any problems and make pregnancy plans under the guidance of a doctor.