Chest pains! What's wrong with me!? Panic attack, gas!? I'm scared ?

I'm away on vacation. I'm 19 and I'm overweight. & I also have asthma as to which I use two asthma pumps. Well I ate this sandwich really fast like I took a big bite and after I ate it a little while later I started having chest pains... And then I had gas. It was there for awhile I took my inhalers and it went away. Then it came back. But then this morning I started shaking and crying and I had this weird feeling like something was going to happen so I thought I was going into a panic attack and I do have symptoms of that... Any ideas as to what could be wrong with me. And I just have chest pains I can breathe fine. I will be going to the doctors when I return home on Monday!�