My tailbone is in some constant but really small pain...?

About a day ago I was sitting on the couch playing video games and my bottom/tail bone area went into some good pain, it lasted for a few seconds. Ever since that happen it feels like there's a small constant pressure/pain down in my tail bone area. Happens when im sitting, standing laying on my side, ect. The pressure/fells constant and a can't really pin point the area though. Also the pain/pressure isnt enough to stop me from doing anything, bending down and stuff like that. The pressure/pain is more of a nuisance then anything, but why is this happening?