Welcome to the forum.
of finger will take 3 weeks normally to heal with good immobilisation in form of buddy strapping.
Now you need good physiotherapy
and hot fomatation.
It will become normal in few days.
I hope this information has been both informative and helpful for you.
You can consult me again directly through my profile http://www.healthcaremagic.com/doctors/dr-saurabh-gupta/64132
Dr Saurabh Gupta.