NK cells are cells with immune function and have a strong effect on the removal of viruses or bacteria from the body. Its normal value is between 7-40%, but if it is too high, it can have an effect on pregnancy, and if it is too high, most of the endocrine system is disrupted. The endocrine function plays an important role during pregnancy, and endocrine disorders can lead to embryonic abortion or miscarriage. It is advisable to identify the cause of the problem in time and treat it symptomatically, relax properly, avoid anxiety and tension, eat more fresh fruits and vegetables, especially foods rich in vitamins and proteins, develop good habits, sleep on time and do not stay up late, keep your pubic area hygienic and clean, and do a good pregnancy check.