If your Sweden visit visa remains valid for your travel dates, there is no need to apply for a new Schengen visa. You can travel to other Schengen countries as long as your visa allows multiple entries and you comply with the 90/180-day limit. Note that a single-entry visa will not allow re-entry once you exit the Schengen zone. Before planning additional trips, it's a good idea to confirm your visa's validity, the number of entries allowed, and the days you have left.