From my own experience I'd say what you were feeling and seeing is actually a muscle spasm. I do get heart palpitations but I also get muscle spasms in my calf, eyelids/brows and sometimes upper arms, and I can especially see the ones in my calf. Do you eat lots of sugary food? They can cause what you're explaining.
I know it's the muscle spasms because you can't see a pulse, well barely, with the naked eye. :) Hope this helped x
I know it's the muscle spasms because you can't see a pulse, well barely, with the naked eye. :) Hope this helped x