Help / advice unexpected pregnancy

Hey guys, i booked a holiday for our family of 5 from Aus to Japan was over $21k through a travel agent. I have since found out I am unexpectedly expecting... yikes!

I will have a nearly 3 month old, 2 year old 5 year old and 8 year old at time of travel, I already am having major anxiety about travelling overseas with a new born, my agent is away so I don't know what can be refunded and my travel insurer isn't being forthcoming if this is something I can claim a refund on!

Any advice, help anything.. please