Hello, I took the day off of work because I was having dizzy spells, but now something new has come along and is really hurting!! I have a pain at the very bottom of my back/top of my bum (I have included an informative diagram to help you see where ) It is difficult to describe, but I can't sit down because it hurts. i have to stand or lie on my side. It hurts if I cough or move suddenly or move from lying to standing. What could it be? It just came out of nowhere this morning!!