My stomachache and heartburn symptoms have gotten worse lately.

The contents of the meals didn't change from usual or anything...

The amount of momentum is similar, and

It doesn't seem like anything has changed.

My stomach rumbles unusually often, and

The stool becomes thinner

My heartburn symptoms are really bad.

If you starve, it stings from starvation, and if you eat, it stings from eating....

I don't overeat or eat spicy food, but this happens...

Oh well, it's my health checkup year, so I am going to get a gastroscopy, but...

Could it just be gastritis?