Should I lie on my stomach or front with my buttocks up after intercourse with a posterior uterus?

A posterior uterus does not require special positioning after intercourse. The normal position of the uterus is mild anterior flexion, but posterior or horizontal positions are also common, and either position of the uterus does not greatly affect pregnancy.
The normal position of the uterus is mild anterior flexion, but posterior or horizontal positions are also common. Either position of the uterus does not usually have a significant effect on pregnancy if it is not accompanied by other factors that seriously affect pregnancy.
Pregnancy is a probability event, need both men and women to actively prepare for pregnancy, improve the quality of sperm and egg, usually to maintain adequate sleep and nutrition, appropriate exercise, do not be too anxious, keep relaxed mood.