Sever abdominal pain at 36 weeks

I went to labor and delivery today with severe pain and vomiting. They asked for a urine sample but never went in to get it while I was there. They said that yes I was contracting but not in labor gave me iv fluids and nausea meds through my iv. When the fluids were done they gave me the choice to stay for more fluids or come home. I thought a warm shower or bath would help so I came home. Now literally doubled over in pain, can't use the bathroom when I go to the bathroom and I'm still vomiting. I called after hours call center and was told it was up to me. What would you do?