When do you really know you're in labor...my back and all down my legs are hurting.. Been in pain pretty much all day.. Carrying lower AND after eating even vomited.. I am 38 weeks 6 days... Monday am being induced... I cant tell if i just want baby out or if i am slowly wee bit going into labor.. monday the dr checked my cervix and i am dilated at 3 almost 4 ...thinned out and he said i could go at any time.. Altho i know some can go weeks at 3.. Thanks mommas.