Ooh I think you're making WAY more of this than they are
 
Little puppies will play fight all day long and this fighting can get VERY VERY noisy sometimes 
They are just being the dogs they need to be 
Unless you are hearing a a YELP! 
Or if one is constantly running away from the other one
I wouldn't get concerned 
A word of warning 
from someone who does have two very healthy pups .... expect more of the same 
