One morning after awakening I noticed my lips were slightly numb and sore and the inside of my mouth was slightly numb and tender. When I had my morning orange juice I noticed the taste was way off. I thought it was spoiled. As I went along my day I discovered all food tasted bland. No real distinction of taste. This has lasted over a month so far. I have seen my doctor and he has no idea what is causing this. I am going through several different tests. Can you help?