qt not running with updated files

Hello,
I don't know what happened but all of a sudden my Qt seems to run with my old files. I'm using Qt creator 4.7.3. I changed my labels. When i do a build-clean,qmake,build & then run the project, Qt is still displaying my old labels. I'm not sure what could've caused it.

Thanks in Advance

Prem.

You are either not building the source you think are, or not running the executable you think you are.