If the period has been clean for 25 days, it means that about 30 days have passed since the day of menstruation, and you can test whether you are pregnant or not at this time, mainly by drawing blood to check the blood HCG in order to know whether you are pregnant or not. If you take a urine HCG test, you can’t detect it at this time because the concentration of HCG in urine is relatively low, and you can detect whether you are pregnant or not only after 35 days of menopause. Therefore, if you have been menstruating for 25 days or so, it is recommended that you take a blood test to check the blood HCG to find out whether you are pregnant or not, and if the value of the blood HCG is more than 10 mIU/mL, it indicates that you are already pregnant. If you are planning to get pregnant, you must strengthen your nutrition and pay attention to rest in your daily life, and you should not have sex in the first 3 months of pregnancy.