The intercourse with the purpose of pregnancy is not required to wear a condom, but the birth of a girl is mainly related to the male sperm chromosome. In general, a few days before and after ovulation, without contraception, is the best time to conceive, after intercourse in the buttocks under the soft pillow, elevated hips, help sperm into the uterine cavity, increase the chances of conception, about 15 days after intercourse can be through the HCG test, to determine whether the pregnancy, can also be detected through the test paper, but the accuracy rate is low. The sex of the fetus cannot be determined by itself, but mainly depends on the male sperm. You can improve the body’s acidity and alkalinity through daily life, create a suitable environment for X sperm or Y sperm to survive, quit smoking and drinking during the period of preparation, and take folic acid supplement to prevent fetal neural tube deformities. You don’t need to wear a condom when you have intercourse for the purpose of getting pregnant, but the probability of having a daughter is the same as a son, and it depends mainly on the male, so let nature take its course and don’t put too much pressure on it.