A few weeks ago, I popped what I thought was an average-sized under-the-surface pimple on my thigh, near the intersection of my thigh and pubic region. It has since become a large, hard, lump, about 1 cm in diameter. It is mobile in the sense that I can pull it away from the flesh underneath and mostly wrap my fingers around it through the skin (sorry this is a bit detailed, I just want to be thorough). It is painless, but I cannot tell if it is irregularly shaped or not. I am tempted to say this is not cancer, simply because it appeared so recently, right where I had a pimple, but I would love to hear from someone who knows more than I do. Thanks!