What are the symptoms of fallopian tube blockage? Fallopian tube blockage refers to the obstruction of the fallopian tubes in the female reproductive system, which prevents the combination of eggs and sperm, thereby affecting pregnancy. The following are the symptoms of blocked fallopian tubes: 1. Infertility: Blocked fallopian tubes are one of the main causes of infertility. If a normal couple fails to conceive within a year, the problem may be that the fallopian tubes are blocked. 2. Abnormal menstruation: Blockage of fallopian tubes will lead to less menstrual flow, shorter menstrual periods, and menstrual pain.