It's a tough one, but for me personally if I were 35 wks I wouldn't be wanting dh to go away.
In saying that you know he is over seas ATM for work and I am 28wks, but given my first pregnancy ds was born at 33 wks I think I'd have a pretty strong case for him to not go..... I am nervous that he is not here ATM incase something were to happen, so after 30wks he needs to stay put.
Do yo have an ob appt just before he goes or anything? Maybe a check up and as long as everything is going quite smoothly may put your mind at ease hat you will be ok for that period