What caused this issue today?

I had chest pain today and mild headaches too.

I think it could be caused by me not consuming dairy for 18 hours when I usually eat dairy 7 times a day, or it could be me not eating enough fruits and vegetables, or maybe it is because there were chemicals in the restaurant mocha I had this morning. I also had a flu shot yesterday, maybe this is a side effect.

What caused this issue today?
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