MES looking over-extended. Potential pullback forming.

1. Price is extending outside the upper channel
   
2. Price failed to make higher highs
   
3. There is a small but unfilled gap that could be looking to get filled.
   

We have been in a strong bullish trend for quite a few days now. A couple weeks ago price cranked the heat up in its bullish momentum but in consequence, leaving a gap unfilled. It is in my belief that we could be looking at an over extension on price followed with another pullback retreating to the unfilled gap at around 5458.50.

I would like to see price break below my level of 5,502 to confirm.