I have two lumps on my lower back. The first is small and hard. It is on the right side at the top of my sacrum. the other one is lower, near my tail bone. The lower one is soft and has slowly gotten bigger. It is about 1 1/2 inches wide and 2 inches long. I have pain almost constantly. mostly pressure but some times sharp stabbing and twinging down my leg. I am a 33 yr old female.