I keep feeling this odd sensation in my collarbone area on the left side, around the armpit area, and in the left arm. it feels like flutters and my neck is really tight. are these palpitations or muscle twitch? vitals normal. 27f omeprazole 20mg qam?

Palpitation is a sensation felt from the heart when the heart beats are felt prominently, such as racing, pounding, or skipping. Fasciculations are brief and spontaneous muscle contractions that give a twitching sensation, such as an eyelid, or large muscle group like the arms or legs. These can be seen with muscle fatigue after a workout, but may be concern if associated with muscle loss.