Whereabout of My Chest Pain?

It's been about 1 month since I felt chest pain on Oct. 11th.

My mother said,

"You took caffeine too much, so chest pain occurred."

I went to sleeping hospital about this case and Sleeping Apnea Syndrome.

My doctor said,

"The reason that you felt chest pain was unknown.

But you should drink cold water when you feel chest pain.

It may be occurred by GLP-1 agonist.

But please monitor your chest feeling."

By nitroglycerin, it'd not recovered my chest pain, so I didn't get nitroglycerin.

But is it better if I got it?

The doctor also said,

"It's better for you to lose your weight and continue to take CPAP, to reduce your chest pain."

Recently, my nausea is terrible and my appetite has decreased.

Today too, I ate a little dinner and drunk no liquor.

Is it OK for me to go with the flow?

My weight is 89.2kg now?

For future, how much can I reduce?