Sounds like the Pink Cloud.
The pink cloud is the feeling of euphoria after quitting. Be careful as it may disappear one day. I say may as it also may not.
Work those steps of recovery! That is the program of action and change. I worked them quickly and early and my pink cloud lasted a while.
Reality may set in and feeling comfortable was uncomfortable for me as it was new.
Just stay strong, stay stopped, and keep moving forward.
Congrats on staying stopped!!!!!!!