Voluma Uneven and Bumpy: Will it Improve?

Y'day I had Voluma injected with a Canula into my cheeks to enhance the cheek bones and create a lift. Apart from the fact that the area is extremely sore, and warm to the touch/feel, the result is quite uneven and "bumpy" you can clearly see where the filler ends without smooth transition. I want to know whether this is normal for the filler to be bumpy at first (perhaps it's self levelling, or there might be some scar tissue created because of the cannulae used?) How long b4 it improves? Tnx