Hi, I m an 18 year old female, for the last two days I ve been experiencing some pain very low on my back and I wrote it off. Today it was almost unbearable, it hurt to sit, it hurt to walk, it hurts to move. I tried to find the source and realised it was at the very top of my butt crack. There s a hard lump that hurts if I touch it. I have applied pain relieving cream and taken some pain killers but the haven t had any effect.Please help.