Ok im new here but yeah im 19 years old im 6'1 weigh like 125 yeah im skinny..but yeah my lower left side hurts..when i push on it it hurts..and also sometimes it aches..its on my ribs..i think...but yeah it aches and then my stomac hurts and alot of gas and stuff...does any one know what this is? it feel likes a cramp but it says..i also play guitar so i was wondering if holding the guitar could cause that but i dunno what it is..its kinda bothering me..any ideas? please help thanks!