Melissa, You might want to join the facebook group called DNA Detectives. Also, you can transfer your DNA from Ancestry to ftdna, and then to My Heritage. The transfers are free. You might also want to buy a test from 23andme. This will put you in mire databases, and give you the possibility of finding S closer match.
Read the files in DNA detectives, especially on building your tree. Take screen shots of your closest matches. Try to see which ones are connected to each other. Also, look at the green chart.
In addition, there is a facebook group for Puerto Rican genealogy. I would suggest that you join it, in case there is someone who is a match.