my 8 year old daughter is complaining of a pain below her belly button. It is a sharp pain and only hurts when she stretches and used her tummy muscles. She was not doing any physical exercises when the pain was first felt. She was lying in bed and lay back when she felt it. It is not a constant pain, and only felt if she has has to get up to walk for instance. Is it worth going to get it checked out today, or shall i wait 24 hours. She has no other symptoms. I was thinking that it may be the beginning of appendicitis.