The harmonies will drive you crazy. But dont scare him away by being a drama queen..lol. He is probably trying to figure out how this will change his life too. Hang in there!!
Easy answer, Hormones can make us feel so alone period, but to have a long distance must make it that much harder. Hang in there. After the first trimester hormones tend to level out so you'll feel like you can make decisions rationally. :-)