Labor?

So just in the past hour I've started to feel super sick and gross like I would on my period, lot of gas, pinching pain in vagina, my whole body aches, and my belly button popped out WAY more than it usually is, & getting pressure in my butt and vagina. Could this be a sign labor is near? Did anyone else get this before they got contractions and/or went into labor? Thanks for any help!!