The first thing to consider is whether it is a period, some women may also have a small amount of vaginal bleeding during ovulation; secondly, we have to consider pregnancy and endocrine disorders or other diseases that cause low menstrual flow or even amenorrhea. Pregnancy confirmation: 1. You can use early pregnancy test paper to check whether you are pregnant or not 7 days after your period, if the test paper shows two red lines, it means you are positive, which means you are pregnant. 2. If no pregnancy is found through the above tests, patients have to go to the hospital for further diagnosis to confirm whether it is due to endocrine disorders or low estrogen levels that lead to low menstrual flow or menopause or other gynecological diseases, while patients with long-term irregular work and rest schedule, stress and excessive mental tension may also lead to reduced menstrual flow or even amenorrhea.