5th metacarpal fracture full crack.

I had sports injury 5th metacarpal fracture. It is a single crack but cracked fully. I have checked with my ortho doctor and he advised a splint for 3weeks. After 3weeks I took an xray but through the xray it is not fit properly the xray shows the result of what before the 3weeks is. Its a 4th week of the injury. My doctor advised to remove the splint and can do the normal exercise for the fingers. The pain is not there but still am not able to hold the things properly with the support of my little finger. Am not able to drive my bike by holding it properly. Also there is a slight change in my little finger. I am very much worried about this. Can any one explain how the healing will be. After the full healing am I able to do the regular things properly??