Two questions. 1st, How do soothe a GERD attack/episode? 2nd, is lower left pain (not sharp but dull) a GERD symptom?

1st, one time I was having a GERD attack, and I took some gum. The gum was either watermelon or cinnamon flavored I think, and it actually got rid of the attack. Now I tried this again during an attack, but with mint gum...and it did nothing! I would even say it made it worse.I don't know if I got lucky that the non-mint gum got rid of the attack. I also find that taking deep, slow breathes makes the attacks more tolerable.

2nd, sometimes after eating, I get this dull pain in the lower left side of my body; near by belly bottom. It's not super painful. I can ignore it because it's not sharp. It just feels a little dull or sore. However, I have health anxiety and is afraid this might be a sign of something worse.