Anyone else feel tail bone pain?????

Francesca • Mommy & daddy to be 😬
I made a cake for my sister a couple of weeks back. & sat on a stool for some time. Then drove the cake to her 3 hours away. & ever since then my tail bone has been killing me. Last night was the 1st time that rolling over in my bed hurt my tail bone. I feel like it's getting slightly worse. But idk why this is happening. 
Never had this pain before & I didn't fall , no one hit my bum playing around or not.