I was using my cellphone when plugged into the usb 3.0 port of my laptop. I did not have my laptop plugged into any charging outlet. But while using the cellphone (metal body) I felt mini vibration when it was plugged in I felt it for a long time. 5-10 mins. Then I plugged it out of the laptop just to check and yes it was due to it being plugged it. I checked the input mA and volts on an app. It showed 200-360mA of current with 3.4 volts. And now my hand feels weird. And the question is does this have any effects on your body? Or your brain? Im also anxietic by the way. So need to know the answer from someone who understands this before this paranoia makes me panic anymore. I feel like the current has affected my brain or my hand in some or the other way.