A bacterial infection of the vagina can feel a lot like a yeast infection if the vulval area is itchy or painful. Unlike a yeast infection, the discharge can be dark yellow, green, or brown and it won't smell like bread, it can smell like fish or something rotting.
GERD can and does cause upper back burning sensations that can migrate down one side or both sides of the body to the legs. Sometimes pain or symptoms may occur in the chest or sternum area but not always. GERD can also cause a recurring cough and fatigue.
If a physician has ruled out these serious causes of chest pain, other causes may be explored. Common causes of upper back pain that do not involve the spine include: Heart attack. Pneumonia and pleuritis. High blood pressure. Fibromyalgia (widespread muscle pain and tenderness) or other chronic pain syndromes.