If there is no progesterone it is impossible to get pregnant, in the clinical situation of low progesterone may cause infertility, and without progesterone it is even more unlikely to get pregnant, then the ovary function is normal, it will be the periodic secretion of estrogen and progesterone. If it is due to endocrine disorders, it may lead to a lack of progesterone, which will affect the pregnancy. It is recommended that progesterone can be properly supplemented during the second half of the menstrual period, such as after ovulation, and it is recommended that the medication be used for three consecutive menstrual cycles, which basically corrects this progesterone deficiency, and then pregnancy may occur. So although pregnancy seems relatively simple, after intercourse sperm and egg will be pregnant, but must have a normal endocrine, fallopian tube, endometrium normal, all normal before you can get pregnant.