dramatic size loss

I cant believe the amount of size I have lost. I remember measuring my penis with a tape measure a few years ago and was almost 7 inches. Right now when I lie on my back I'm lucky to get to 4.5 inches. Laying on my side is 4.0" -fully erect-on viagra. I have the traditional 25 to 30 degree bend upward. My flaccid penis is childlike. All of this happened in a year. My wife is so loving and supportive, but my small size has become a mental obsession for me. I feel less of a man. I also experience on and off pain. We can still have regular sex, and she doesnt complain. I think it may have stabilized. I am so afraid of making it worse at my age with shots and making it non functional. Has anyone else had such a dramatic size loss? I havent seen a doc yet because I keep researching for the golden bullet.