Situation: I'm a U.S. citizen who studied abroad in France for a year using the type D long stay visa.
While studying in France on my visa, I traveled to other Schengen countries for around 90 days total during the final part of my visa duration. However, my passport was not stamped throughout my travels within the Schengen zone.
Now my visa is expired, and I am back in the States.
Do I have to wait 180 days before traveling back at all to the Schengen zone since I spent my 90 days already in other Schengen countries while on my visa? For example, let's say I want to visit as a tourist for 3 weeks.