That is not horrible at all!! Most of us can understand wanting that decision taken away from us. If he is not here, there is no possibility of getting pregnant...therefore you don't have to be afraid or anxious about the testing, waiting, and fear that comes with the whole shebang. Take heart that a lot of us would feel the same way, real separation or not.
I hope you have a ncie break while he is gone and that when he gets back, you are more emotionally ready to try again. And hopefully all it will take is one try

Be gentle on yourself...we all can be overly hard on ourselves for our feelings and emotions surrounding this terrifying path.