Patient's question:
Here is the English translation of the provided text, with the line breaks preserved as instructed:"I have been experiencing menstrual cramps again for these past few months. At first, they weren't severe, but now the pain is getting worse and often makes me dry heave. Also, my menstrual period has been much longer than before. The doctor said I have endometriosis. What assistance would you like: What symptoms are typically associated with endometriosis?"
Doctor's answer:
Endometriosis can lead to infertility, but it doesn't mean that every patient will experience infertility. The causes of infertility are complex, such as changes in the pelvic microenvironment that interfere with fertilization and the transport of sperm and eggs, abnormal immune function leading to increased anti-endometrial antibodies that destroy the normal decomposition metabolism and physiological functions of the endometrium, and abnormal ovarian function causing ovulation disorders and luteal formation malfunctions. Moderate to severe patients may experience interference with the loading and unloading of fertilized eggs due to adhesions around the ovaries and fallopian tubes.