Girls can achieve pregnancy through a reasonable sex life. If you are planning to conceive, you can estimate the time of ovulation according to your menstrual cycle, or use ovulation test paper or ultrasound to monitor ovulation, and then suggest having intercourse every other day before and after the day of ovulation, and use pillows to elevate your buttocks after sex, which will increase your chances of conceiving. Generally for normal ovulation, fallopian tube and semen normal, healthy couples through reasonable sex can get pregnant. If you cannot conceive naturally for a long time, you can also take ovulation drugs, embryo transfer or artificial insemination as prescribed by your doctor to achieve pregnancy, but you have to choose the appropriate assisted reproduction methods under the guidance of your doctor.