Puzzling symptoms

Other conditions
1

Hi everyone, 

I’ve been experiencing some puzzling symptoms over the past couple of months, this includes a light weightless head, leg weakness in thigh and calf muscles, sometimes clammy/sweaty skin. 

All my blood works have have been checked and there are fine, I’ve had 3 ECGs all clear. I take a multi vitamin and iron everyday. I have gained a couple of pounds also.

Ive been doing some research and have found that some of my symptoms match what’s in the link below: 

https://www.meetup.com/Tourdecurepdxvan/pages/3726022/Bonking_(Glycogen_Depletion_-_Low_Blood_Sugar)/?_cookie-check=kHS39CSbhe6MXRLy

Feeling worried, could it be this?