(HealthDay News) -- While morning sickness and a missed period are classic signs that a woman may be pregnant, there are others.

While symptoms differ from woman to woman, here are additional early signs of possible pregnancy, courtesy of the American Pregnancy Association:

• Spotting, cramping or a period that is shorter and lighter than usual.
• Swelling or tenderness of the breasts, and a darkening of the skin around the nipples.
• Fatigue.
• Nausea.
• Lower back pain and headaches.
• Frequent need to urinate.
• Strong cravings for certain foods.