Holly,
I am sooooo sorry to be the bearer of bad news ...... but your estimated wait for an interview will be approximately 24 months from the time that your file arrives at the Consulate in the Dominican Republic.
According to your timeline, you received your NOA2 in August .... of this year. So, it's quite likely that you will be on the new waiting list that is scheduled to be posted on October 2nd or 3rd.
This is the link to the waiting list and the appointement list:
http://www.usemb.gov.do/Consular/iv-e.htmBoth files are in a PDF format, so to find your place on the 500+ page list just use the "search" function (enter your case number that was assigned by NVC).
And if you'd like more information specific to Americans bringing their spouses or fiances to the US from the the Dominican Republic you can check out this Website: dominicanstotheusa.com
Good luck!!!
Wendy