Have hiatal hernia. had pain below ribcage (front) & in my back & burping after heavy lifting last night. feeling fine now. anything to watch for?

Yes: You need to make sure that your stomach didn't go into your chest. See your doctor.

Worsening pain/vomit: Hiatal hernias are very common. Most often are asymptomatic. Most common symptom is heartburn. As a test take some tums (calcium carbonate). If symptoms get better these would represent reflux. If they don't you may be having issues with your gallbladder.