You should look at these links. The first link, below: You, being born of a Paraguayan parent, according to #3 of Article 146, can obtain nationality if you move to Paraguay permanently:
This link tells you what you have to do:
If you haven't contacted the Parayguayan embassy where you are now, I'd suggest you do so. If you are in Paraguay contact Migraciones, click on Contacto on the menu bar of the link above.
