Unexplained infertility occurs when standard investigations show normal ovulation, healthy sperm and open fallopian tubes, yet pregnancy does not occur. It indicates subtle or unseen factors that cannot be detected through routine testing. Although the exact cause is unknown, many couples can still achieve pregnancy with the right treatment approach.

Unexplained infertility may involve hidden or complex factors that affect fertilization or implantation. While routine tests appear normal, underlying issues may still interfere with successful conception.

1. 1. Poor egg and sperm interaction
   2. Implantation difficulties
   3. Subtle hormonal imbalance
   4. Mild endometriosis not visible in routine scans
   5. Immune or genetic factors
   6. Timing related issues

Unexplained infertility may not present clear physical symptoms, as routine tests often appear normal. However, couples may notice consistent difficulty in achieving pregnancy despite regular, well-timed intercourse.

1. Inability to conceive despite normal test results
2. Regular menstrual cycles with no success in pregnancy
3. No obvious medical explanation for infertility
4. Emotional stress and anxiety due to repeated failure
5. History of unexplained miscarriage

Diagnosis is made when all standard fertility evaluations show normal results but pregnancy has not occurred over a reasonable period. This process focuses on excluding known causes before confirming the condition.

1. Normal semen analysis results
2. Regular ovulation confirmed through tests
3. Open fallopian tubes confirmed via imaging
4. Hormonal profiles within healthy ranges
5. No visible abnormalities in uterus or ovaries