Brief Answer:
Several ideas

Detailed Answer:
ok you will need scoping.

I am assuming that you have had this pain before and. the esophagus is the cause.

prevention

some gods are likely to trigger.
acidic. hard rough big hot or very cold.
carbonation likely to be bad.
then diffe,rent times and diffe,rent size meals can be triggers

cigarettes alcohol are really bad
coffee probably bad
dairy may be bad

then medical treatment
calcium containing antacids are bad..they trigger acid

eating and lying down is bad
nitrates can be quite good. acid supression w ppl good but these are presction


the prevention and diferent food you can do...mostly...will need doctor intervention

---

Brief Answer:
Night before Preventative?

Detailed Answer:
Something one can take that might be helpful prior to getting definitive treatment?
Ok, here's your bias. It is due to the part of the brain called the striatum. It is involved in automatically processing the world and automatically ducking when something is about to hit. It is called the SALIENCE CENTER. We automatically look for the THING in the foreground at the expense of ignoring the background. We look for the right pill, or magic thing to get, but ignore that NOT doing things is more important.
Again, the main thing is to find foods to avoid that are short term triggers and long term irritants.
Tums, calcium antacids, milk are quite likely to damp down the pain briefly but stimulate stomach acid and have it rebound worse soon after. Maalox is not as bad. Simethicone is not bad at all. It probably also won't work.
Medicines that relax the smooth muscle/prevent spasms, are all prescription only. Nitrates, reglan are some of these.

---