Same over here. The feelings in my right hand are a lot more sharpened though as I rarely use my poor left hand x). Meditation really helps raising awereness of your surroudings, also, awereness of your body you know. So shortly, you may start noticing little or even huge details you never noticed before in your reality.
Personally, I feel some sort of liquid energy in the left side of my head at most and the pretty confusing thing is that I can't tell if it's truly active inside or outside my head.