 She won her first senior international medals the following year, starting with a 200 m silver and relay bronze at the 2006 Ibero-American Championships, then a relay silver at the 2006 Central American and Caribbean Games.Obregón established herself at continental level with silver medals in the 200 m and relay at the 2006 South American Championships in Athletics, as well as a 100 m bronze medal.She was a participant at the 2007 Pan American Games, but did not progress past the 200 m semi-finals.