What are the symptoms of infertility?

Patient's question:

I suspect I might be experiencing symptoms of infertility, but I'm not sure. Because I've been married for several years now and still haven't had any children. I've heard my friends talk about infertility before, and I think it's quite similar to my symptoms.

Doctor's answer:

What symptoms: Male infertility, amenorrhea, galactorrhea, infertility, menstrual disorders, changes in menstrual cycle, dysmenorrhea, amenorrhea
Female symptoms (1) Menstrual disorders: 1. Changes in menstrual cycle: Menstruation may come earlier or later; 2. Changes in menstrual flow: Excessive or insufficient flow; 3. Extended menstrual period: Common in luteal phase deficiency and endometrial inflammation.