Hi, I had a hand injury where my hand was caught between 2 metal objects, a load swinged against my hand and it swelled up huge immediately on the top side. I was taken to the doctor, they done ex-ray and said no bones are damaged. The incident happened on the 21 December 2018. The swelling is gone, but I experience minor numbness between my index and middle finger. When I touch certain areas on the top side of my hand it gives an electric shock, it's also sore if it's pressed too hard. The doctor says nothing is wrong and it should heal in 3months, 3months is passed and it's still the same should I be worried? I'm a mechanical fitter and use my hand daily should I seek a 2nd opinion. Thanks in advance.