I'm 18 years old, I don't exercise very often and my diet is ok.
Last night, I went to a restaurant and right after I was finished eating, my heart started beating hard to where I could actually feel it. At some points, it felt like it was beating too fast, but I couldn't tell. Then I would feel my heartbeat in the bottom part of my throat, in that divot right above your chest (clavicle?). Also, when I stood up from the table, I felt dizzy, but that went away. Its now a day later, and the same thing is happening, I'm just not dizzy. Is this something serious that I need to go be seen by a doctor?