Small lump on my right nut..i'm 17..Do i have anything to worry about?

Don't self diagnosis disease and frighten yourself. Most testicular lumps or swellings are not a sign of cancer. But whilst, they should never be ignored. You should visit your GP as soon as you notice a lump or swelling in one of your testicles. Research has shown that less than 4% of testicular lumps are cancerous. For example, varicoceles (swollen blood vessels) are a common cause of testicular lumps. You could google diuretic and anti-inflammtory pill, it has a website provides online service for free, i think the online doctor may help you.