I can feel water splashing just below sternum when lying down. also have belching when getting up and constant gurgling. is it a hiatal hernia?

SOUND LIKE IT: THE WATER SPLASHING SOUND IS THE SOUND OF FLUID IN YOUR STOMACH THAT PART OF IT HAD HERNIATED UP TO YOUR CHEST yes it is a hiatal hernia avoid tight cloths avoid late meal and snaks /sleep with your head up 30-40 degree eat multiple small meals avoid coffee ,chocolate,peppermint take medication like prilosec or prevacid (lansoprazole) see a doctor for proper treatment