If the two people are simply lying together to sleep is not pregnant, have sex together is possible to have a child. If a man and a woman are just sleeping together, they will not get pregnant. In order to get pregnant, you need to have normal sexual intercourse, and the man’s sperm should be ejaculated into the woman’s vagina at the exact time when the woman is ovulating, and there are mature follicles that develop and grow, and ovulate, so you can achieve the possibility of natural fertilization. There is also the unnatural way to have a baby, which is IVF, which makes it possible to have a child whether you sleep together or not. If you are not ready to have children, it is recommended that you use contraception when having sex; if you are planning to have a baby, you should calculate your ovulation period according to the time of your menstrual cycle to increase your chances of conceiving naturally.