Heart pounding when I woke up

I had a dream I was in this building, and I had my son with me. There was a buffet. It was almost like a luxury hotel. We were just wandering around. We were trying to find our hotel room I guess? On the outside there was a mixture of Hispanics walking on the sidewalks, like I was in Mexico. Someone got shot and then there was a horde of people and police were telling everyone to get 100ft out of the way from the body or else. I was trying to rush my son and I out. But it was too crowded. All of a sudden there were super bright lights flashing and a high pitched electrical sound and I held my sons hands over his ears and kept them in place with my elbows while I used my hands to cover my ears but the sound got so loud and all of a sudden it felt like someone punched me in the chest and I woke up. My heart was pounding.

I have had several dreams that have woke me and made my chest feel funny and it scares me because of health issues.