PLATEAU...!!!

Hey!
I have been pretty consistent the past four months -- lost two inches from my waist, seemingly have NO fat on my thighs, glutes, and arms!
However, the changes that I'm seeing everywhere BUT my stomach are extremely frustrating!!! It HAS trimmed down but now I feel I'm at a place where that little lower/tummy chub WONT MOVE!!! Meanwhile everything else is cut and lean! Help