I have lost some sensation in my feet, feeling numbness and tingling sensation?

I have had severe problems with tingling in my feet. It began in my right foot and later moved on to my left foot. I also have a little numbness sensation. Feels very painful especially during the evening. It seems to get worse then. Feels like pins and needles, tingling, and some slight burning pain. What can it be?

Age: 33
Medications: Advil