Recently, about two months ago, I noticed a small, firm lump, about the size of a pea. The boarders are unidentifiable and it Has a slightly darker and more purple skin tone as the surrounding skin. It doesn't move, and it's not painful. It's about 3 centimeters away from my hip bone. I am fairly young, a teenager, and I have had my fair share of being rejected by my parents when asked if there is something wrong. Should I worry about this lump?