Diarrhea for 4 days?

K

So work up Monday really sick. I couldn’t keep anything down so I ended up in the er for fluids and something for nausea. Well since then my stomach still hasn’t been right. It only happens at night though. I’ll be fine during the day then all of the sudden when I lay down for bed it hits me. Is this normal if I’m getting over a virus or should I call my OB? I’m leaving today for a trip and will be gone for 12 days.