According to current information, after Omicron is cured, patients usually do not experience infertility and other sequelae. The factors that really affect fertility are age, disease, social environment and other factors as follows. 1. Age: The best age group for women to have children is 25 to 28 years old, women in this age group have relatively high egg quality and stable hormone level, which makes them easy to conceive and their body recovers fast. 35 years old women’s fertility decreases, and 38 years old women’s follicle number, egg quality and fertilization ability all decrease, which makes it difficult for them to conceive. 2. Diseases: vaginitis, cervicitis, sexually transmitted diseases (such as gonorrhea, syphilis, etc.), pelvic inflammatory disease, etc., easy to lead to tubal obstruction, adhesion, umbilical function limitation, and if multiple abortions, induced abortions, etc., it is more likely to result in secondary infertility; males, such as testicular inflammation, epididymitis, etc., can also lead to oligozoospermia, spermatosis, or even azoospermia, which affects fertility. 3. Social environment: Being in a high-pressure environment for a long time will lead to decreased libido and sexual dysfunction in men. For women, irregular menstruation and abnormal ovulation may occur. These are also common factors affecting fertility. 4. Others: Smoking, drinking, hunger strike, staying up late, etc. will affect the ovarian function, egg quality of women and semen activity of men. In short, if you are not pregnant after preparing for pregnancy for a period of time after marriage, you must go to the hospital in time to do a detailed examination to find out the cause of the disease.