How to check if the AMP module (Accelerated Mobile Pages) is working?
The first thing that needs to happen is to get it reindexed by Google so it knows about it.  I suggest configuring Google Search Console on your site https://support.google.com/webmasters/answer/4559176?hl=en  You can request it to be reindexed there. It was called Google Webmaster Tools before they rebranded it.
Its as easy to set up as Google Analytics.  It shows a display of what your site looks like on desktop, as Google sees it.  

It does show you want it looks like ton AMP.