If you don’t have your period on the 29th of this month, and you have had sex recently, then you can’t rule out the possibility that it could be caused by pregnancy, but of course, menstruation can also be affected by other factors, causing menstrual disorders. In general, under normal circumstances, the menstrual period is delayed for no more than a week, it may be and usual changes in lifestyle, environmental factors, emotional stress and other reasons, you can temporarily observe to see whether the subsequent menstrual period. If the delay is relatively long and you have recently had unprotected sex, then consider that you are pregnant. It is recommended that after a week of delayed menstruation, you can use a pregnancy test to conduct a urine pregnancy test, and if it is positive, it is considered to be pregnant. If the pregnancy test is negative, then you can go to the hospital for a blood HCG test and ultrasound examination, according to the results of the examination, under the guidance of the doctor active treatment. Delayed menstruation should first be clearly diagnosed and, if necessary, treated under the guidance of a physician.