A few days ago my pubic hair started itching, about 3 days max. Yesterday I notice there's a large red bump amidst my pubic hair above my penis. This bump could have been there, but it wasn't as large as it is now. It's about 3/4 of an inch in diameter. It doesn't hurt unless I push on it by accident. I normally just trim, but I haven't in a couple weeks. What could this be?