1. Why is it a common problem to not get pregnant after ejaculation? 2. What are the male factors that lead to infertility after ejaculation? 3. What are the female factors that lead to infertility after ejaculation? 4. The influence of living habits and environmental factors on infertility after ejaculation. 5. How to prevent and treat the problem of infertility after ejaculation? 6. The impact of psychological pressure and factors on the inability to conceive after ejaculation 1