about a week and half ago I sliced through half of my index finger on the blade of a food processor whilst washing up. I went to A&E as it was deep. They cleaned and steri stripped it, checked underneath the cut flap 
gave tetanus and off I went. They said keep bandage on for about 4 days. Bandage has now been removed but the cut is not "sticking" together. I keep knocking it as its right on the edge of my index finger on my right hand. The flap of skin is now hard and I have no sensation in it. Do you think this will heal? Will the cut eventually join together? Should I visit my GP to get it checked? Hoping you ladies can offer me some adivce! Many thanks