Why do I have this weird feeling in my chest?

No I don't think I am having a heart attack! I am only 15. But I have severe panic attacks and I woke up like 2-3 hours ago (middle of the night) and I started having a panic attack, but then I got lots of air in my stomach (like I usually do) so then I had to sit up and burp. Like its not actual burps its just little spouts of air I do it all the time. But usually I get a weird feeling in my throat when this happens like something is stuck but this time instead I have a weird feeling in my chest, like it feels like something is stuck. The feeling is right above my in the center of my chest. It also feels like the air is coming from my chest. What is this? I have panic attacks because I have a fear of throwing up. I don't know why, but I always have. Is this feeling in my chest mean I am going to throw up? Would I have thrown up by now if I was sick? This is a stupid question but could like throw up be stuck in your chest? My stomach is fine just have a little bit of air in it but that happens with all my panic attacks. Sorry if this was a weird question. Thank you for answering!!!