Could gas cause severe left-side chest pain?

Hello doctor,

I am 20 years old and experiencing ongoing, worsening symptoms that concern me. I have had left-side chest pain that feels like pressure or sharp pain. It gets worse when I press just above my left breast. Sometimes, I also feel tingling or aching that spreads down my left arm and into my fingers. Sometimes, my foot aches or feels like nerve pain (pins and needles).

I have had other symptoms recently, like stomach pain, nausea, gas pressure, fatigue, mouth sores, hair loss, joint pain, and weird head sensations. I get dizzy or feel like I am overheating. The chest pain sometimes goes away after gas moves or I burp, but other times, it sticks around and makes me anxious. I was given Omeprazole by my school wellness center, but the symptoms are still happening. I do not have a butterfly rash, but I have been told that lupus or fibromyalgia could be possible. Could this be autoimmune? Or is there anything dangerous going on that I should get checked right away?

The pains in my joints come and go, so I thought maybe just a lack of exercise, but it gets worse on and off. The stomach and chest pain tend to occur hand in hand. My hair loss could just be regular, and because of styling. The tingling in my fingers I experienced when I went into a cold area, and after leaving, felt like pins and needles. I sometimes feel dizzy if I squat down, then get back up. I have had that for a while, but it never felt serious. The weird head sensations happen when I am experiencing pain in my stomach or chest. It is like a sudden pain in my head, and then it fades. The mouth sores I have not had happen recently, but I have in the past. That is all the symptoms I can think of, but feel free to add questions or things to watch out for. The chest pain sometimes got so bad that it felt like I was having a heart attack, but it subsided, maybe after 20 minutes.

Please help.

Thank you.