In the early stage of pregnancy, some women may experience nausea, vomiting, loss of appetite, body aches and weakness due to hormonal changes in the body. If you experience body aches and weakness, and your period is delayed for more than seven days, and you have a history of intercourse and are not using safe contraception, it is recommended that you go to the hospital to have blood tests for human chorionic gonadotropin, and if the blood value is elevated, you are pregnant and need further observation and ultrasound to determine if the pregnancy is intrauterine. If the test result is within the normal range, it is not pregnancy, and the cause of the body aches and weakness needs to be further clarified, which may be due to upper respiratory tract infection or back problems.