I think it was palpitations, it was a feeling pretty hard to explain, sorta like the
heart skipped beats and my breathe was getting taken away. Being the nervous person I am, I started thinking the worst case scenario. It was like that for about 10 min(maybe less, but I felt it so long). Afterwards it calmed down, my heart felt normal and I was calmed. I went to the doc just to make sure everything was fine. He checked me and everything and all was ok.