Foot pain in my left foot....happens even when off my feet...sometimes wakes me up at night comes and goes....intensified yesterday and today?

Need to be seen.: With symptoms you are having, the appropriate treatment would require a detailed examination and history. If there is no history of trauma, the vascular as well as neurological systems are suspect. There is also the possibility of a unresolved stress fracture. To remove all doubt, have a foot specialist evaluate your symptoms.

I would look to see: if there is any issue with your back like a pinched nerve in your back based on the limited info given.