Hello i was scratching my stomach and on the side of it was a very small bump and it had an opening on the bottom of it that was greenish black. I didnt think much of it. So today, about a week later after I discovered it, i was picking at it and then I felt a little bump under it. I squeezed to see if it hurt and then a very tiny, black bump came out from under the skin through the opening. It didnt hurt at all since I found it or when it came out. So my question is if i should be worried about anything even though it has come out?