Pain on tailbone, and swelling/growth?

[Melirain]

About 5 days ago I noticed pain in my tailbone area when I rolled over in bed. It was dull pain, like a bruise; it felt like the pain was coming from the bone itself or right next to it. It only hurt when I moved certain ways or put pressure on it. Now it's the same, except about 3 days ago I also noticed swelling or a growth of some kind, right over where the pain spot is. At first I wasn't sure it was there, but now I am, and it feels like it's gotten bigger.
It's not a Pilonidal cyst (it's about 1-2 inches lower than that, and well beneath the skin, just barely atop the bone).
I haven't injured it recently. I'm 21, healthy weight, never been pregnant, no history of bone or muscle issues. Has anyone else here ever experienced this, or have any idea what it could be? The pain isn't severe but the growth really has me worried...

[Bubulinu]

Simple - pilonidal cyst, research it. I have it as well! There is no real way to solve it, except antibiotics during an infection. There exists the possibility of surgery as well to remove it, however even this isn't guaranteed to fix it. The growth is just due to the cyst becoming infected. It is nothing to worry about though - it's just annoying to deal with. If it's very painful you can go to the GP, and they can drain it. That will fix it for awhile, but it may come back. Or you can go for outright surgery to remove the whole of it. But that again isn't guaranteed to fix it. Mine does produce some pain, but it is bearable, so I choose to live with it.

[Bubulinu]

And yes - pilonidal cyst can be much lower down. Mine started very low, and gradually moved up. That's why I no longer feel pain when sit on a chair for example, because it moved to a different region.