I have a sharp aching pain at the bottom of my big toes. it hurts to much even for my girlfriend to rub it. what is it?

Plantar wart: Sounds like a wart. Would see a podiatrist. Can be treated easily as outpatient.

Many possibilities: Your pain could be as a result of many different things. Causes of pain may include: trauma (fracture, sprain, arthritis), infection (ingrown nail), metabolic conditions (gout), musculoskeletal or biomechanical abnormality and neurologic conditions (neuropathy). A thorough history and physical exam and possibly some laboratory and radiology exams are needed to determine the exact cause.