[2] Agüero was born in Yaguajay in the province of Sancti Spiritus, where she began to play volleyball when she was eight years old.

[2] In 1998, together with Mireya Luis, Regla Bell, Ana Ibis Fernandez, and Mirka Francia, Agüero won the 1998 FIVB World Championship in Japan.

[2][1] In the summer of 2001, Agüero left the Cuban national team during a tournament in Switzerland and applied for political asylum in Italy.

[2] She joined Pallavolo Sirio Perugia, an Italian volleyball club that she had played with during the 1998–99 and 1999–00 seasons.

[2] Playing for Italy, Agüero won the 2007 European Volleyball Championship, where she was declared MVP.