Doing some rough figuring...based on what I can find about your trailer...when loaded and trip ready you will have about 980 lbs of tongue weight.
Now you have to start subtracting that 980 lbs plus the weight of your hitch, plus passengers, the dog, all the gear you load in your truck from your trucks payload rating as shown on the door jam....
But....all this is a rough estimate. If you are worried about the added weight because your wife is expecting, then you are too close. It's best if you drag it over to the scales and know for sure.
anyway, have a good trip.