I have a lump under my skin on the underside of my penis where the shaft and head meet. The size of the lump is between a pea and a grape. I also have a slight burning sensation when I urniate. It is painful and causes discomfort. There is no possibility of an STD. This showed up about a week ago and is not going away. I contacted the urologist but it is a couple weeks before they can get me in. In the meantime Im thinking the worst, anything can help.