Traveling to Guatemala pregnant scared of Zika. Help!

My fiancé and I have planned our wedding in Guatemala. Its coming up in a few months and I just found out I’m pregnant. Obviously Zika is a scare and I don’t know what to do. Everything is paid for and all our guest have bought their trips!!!I’m cancelling the wedding right? Advice please!?! How do I tell everyone? Anyone been out of the country pregnant with Zika scare?