I have extreme pain In my lower back I m starting to believe it s my tailbone. But I don t remember doing anything that could had hurt me. I m also sick and everytime I cough It shoots a pain down my thighs and I almost can t stand. When I sit or try to get up from sitting it hurts really bad almost has me in tears. It does not hurt when I m walking or standing. Unless I move a certain way or cough. What is it? And what are some home remedies to help me get threw this!