Why do I think I’m going to have a heart attack?? Plz help ?

I recently went to the hospital because I had pains in my left side of my chest and they ran test and told me my heart is fine and told me it’s acid reflux but I been feeling jaw pain and pain in my left arm also dizziness and nausea for the past few days so what could that be ???

ALIॐN2021-04-05T06:33:51Z

Dkdidosododododod