I'm a guy, 15 years old and a month ago I shaved off my pubes (I don't know why). But about 2 weeks after that I noticed a small, dime sized, bump form. It looks almost identical to a mosquito that you scratched. It's a little red but it doesn't itch, hurt, or have any other symptoms. (I know it's not a STD) I'm wondering if this is because of an ingrown hair or something else. Please and thank you for your help.