34/3 and in pain

I haven't eaten in 3.5 hours, but feel like I could puke. Having gas/diarrhea pains, the kind like you've held it in and it's making you sweaty and shivery, but nothing much happens in the bathroom and when it does, it doesn't help. Back in agony from middle of back to my hip bones. Never dealt with this with my first 2, but didn't really labor with them either (water broke and no painful/noticeable contractions until push time, and then it was like having to poop)