Heartburn on and off

hi I've had heart burn for a few days in a row after food and even if I dont have any food I've been sick and felt sick been given tablets for it gastro reflux tablets and didn't help could this be something serious not had a scan of my stomach

if this is fairly new to you, i wouldnt worry about it. Have you tried an antacid like Tums?
Are you overweight or have you recently gained weight? Sometimes thete is pressure on your stomach which can cause heartburn.
Try smaller meals. Bland foods. Avoid chocolate and spicy foods. See if you get improvement after a few days.

it’s gone on for a while even when I dont have food I still have it heart burn