[ Cancer ] Open Question : Is this testicular bump a big deal?

I have had a small bump about the size of a small pea on the back of my right testicle for as long as I can remember. I am 16 now and about a year ago, at lacrosse camp I was hit in the nuts with a lacrosse stick an the little bump came free. I'm pretty sure it has since attached itself again. I do not think it is cancer because I have had it for so long and it has not grown as far as I know. I also have no pain in that area. I have no idea what this thing is and I am not sure what to do. I know telling my parents is the best option but I am just hesitant. Any advice on what it is?

Source: http://answers.yahoo.com/question/index?qid=20120216195938AAq0X6j

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