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.
Other conditions that can cause upper left back pain include. 1  Respiratory conditions or lung infections can cause pain in chest and upper left back. 2  Skin conditions affecting skin and subcutaneous tissue like boils, abscesses, stings, bites etc. can cause upper left back pain.