Yes have them translated by an official translator and then have it stamped. Bring both copies. Those text messages will be crucial especially if they are from before the refusal. Usually evidence before the application is the strongest and gets weakest asfter the refusal because they can say that you staged it all.
And if you are pregnant or something make sure you tell them as well. They will ask you obvious questions such as where will you stay once you arrive or questions like where did you and your husband first got intimate. These questions can be found on the website. Just search spouse questionaires and you will find many examples.
https://www.usavisanow.com/marriage...green-card-faq/marriage-green-card-interview/
Here is an example of some questions they will ask you. It is good to study them as sometimes we tend to forget if it has been a long time ago. Remember, if you do not remember the events that it is ok to tell them you forgot. It is better than answering it when you do not remember.