Female infertility can arise from various causes and is often recognized by difficulty in conceiving. Symptoms may sometimes be subtle or mistaken for other health issues.

Key symptoms that may indicate infertility in women include:

* Irregular menstrual cycles (periods shorter than 21 days or longer than 35 days)
* Absence of menstruation (amenorrhea)
* Severe menstrual pain (dysmenorrhea)
* Abnormal bleeding amounts (too little or too much)
* Severe acne or other skin problems
* Excessive hair growth (hirsutism)
* Hair loss and thinning
* Unexplained weight changes (gain or loss)
* Decreased sexual desire (low libido)
* Pain during sexual intercourse (dyspareunia)
* Chronic pelvic pain
* History of ectopic pregnancy
* History of three or more miscarriages
* Nipple discharge unrelated to pregnancy (galactorrhea)
* Chronic stress and depression

If any of these symptoms are observed, it is crucial to consult an obstetrician-gynecologist and undergo necessary hormonal tests for early diagnosis and appropriate treatment.