Did Maven just vanish?

Project type:  Maven, web based, Spring Framework

Yesterday before going to sleep everything was working just fine, today I woke up to a bug, Hibernate wasn't finding the persistence.properties file, although upon double checking it was there, right inside resources.

A bit later I realized my Maven tool window just wasn't there, nowhere to be found, not even opening automatically upon starting Intellij Ultimate, my pom.xml file is still there, but it no longer has the blue icon that it used to have, but the red icon (the default xml icon)

I'm not sure what happened, Maven plug-in is enabled and it also shows under Build tools settings, so I'm not sure what's goin on.

Edit:

View > Tool Windows

Maven isn't listed there either.

Fix:

Okay, I just right clicked the pom.xml file and selected "Add Maven as project" or something along those lines (I don't remember), it's fixed know, I'm going to leave this here if someone encounters the same little problem