Okay mommas. Need thoughts & opinions. I’ve had super bad lower back pain/cramping and stomach…

Okay mommas. Need thoughts & opinions. I’ve had super bad lower back pain/cramping and stomach hurting since about noon today. Extremely bad nausea and I’ve threw up in my mouth 3 times today. Nothing reliefs it. I’ve tried Tylenol pm, water, sitting & laying down. But nothing helps. Any ideas of what could be wrong?? My backs killing me & felling so sick.