About a year ago a lump showed up on my thigh right on my belt line. it was sore but not extremely painful. it was about the size of a pea with a tiny white dot in the center. thinking it was a cyst i took a needle and poked it and squeezed it. it ruptured but it felt like most of it went under my skin. i did that about 5 time within about a 2 week period and it went away. now another one just showed up on the crease of my inner left thigh. i just squeezed it because it had a head on it that looked ready to pop. but when i did it ruptured totally under my skin. that cant be natural is it? what are they? my father has had a cyst on his lower back for as long as i can remember it looks similar