If you want to get pregnant, you should not wash immediately after intercourse, but afterwards you can wash your vulva with a soft pillow on your buttocks for 0.5 hours, and after 0.5 hours you can wash your vulva with warm water without washing your vagina. After washing, you can avoid itching of the vulva after intercourse and vaginal inflammation, and prevent cross-infection. If you want to determine if you are pregnant after intercourse, you can buy an early pregnancy test 12 days after intercourse to rule out the possibility of conception. If you are not pregnant, don’t be overly nervous, because sometimes even during ovulation, environmental, stress and mental factors can determine the inability to conceive, so you can try to prepare for pregnancy several times.