i'm a 24 year old female, & mother of 1. about 5 years ago, i noticed a lump on the right side of my rib cage, almost on the side of my body, & about 2 inches below my right breast. it moves very easily & i can't tell if it has grown since i first noticed it, so i'm sure it hasn't. i asked a dr. about it when i first noticed it, but i can't remember who i saw or what they said. occasionally i'll feel an ache coming from it, or maybe a light pain, but it goes away very quickly. should i have this removed? how will they remove it--will i have to be put under anesthesia?