You should be fine alone, unless there is a medical need for someone to be there to help you. At this point in my pregnancy, things are a little tougher, but certainly nothing I can not handle on my own. My husband is a Fireman, and he is in another state 2 days of the week, and I manage fine on my own.
Good Luck, I am sure you will be fine. Plus, in the end there is sooo much stuff that you can do to keep yourself busy. Lots of laundry, packing your bags, cleaning, cleaning and more cleaning.