Heartbeat issues after drinking

I have never experienced this before when drinking but I was feeling anxious late at night so I decided to drink a few Coors, well I started to feel foggy in my head and I felt like my heartbeat was beating too fast. Well I went to check my heart and it wasn’t beating fast whatsoever but I still felt a dreaded feeling. It went away after 30 min or so but still scared this morning. Does anyone know what this means?