At Work Today, 30 Year Old Male.bloated,shaky Hands,sweaty Feeling,kinda Felt

At work today, 30 year old Male.bloated,shaky hands,sweaty feeling,kinda felt hard to breathe.like I couldnt get a full breath.even when trying I couldnt breathe a full relaxing deep breath.felt scared that I was might die ir something bad was gonna happen.and it would fluctuate.one minute I would start to feel better and the next minute all those feelings were coming back.i ate some crackers and drank water and it kinda started feeling more stable.now the middle of my upper back feels sore and kinda hurts but not bad kinda of pain.i feel like if I could stretch and relax them it might be ok but I cant seem to stretch it. in between my shoulder blades and not my spine.