I would give him the benefit of the doubt for now. You say he is travelling, and there could be a hundred good reasons why he hasn't communicated with you as he said he would. You know how you worry and imagine all sorts and when you actually know, it all seems so straightforward? But you must let him know in due course what this period apart meant to you. You may be new together and fervent, and you probably wonder if this is over sensitising your judgement somewhat, but he ought to know how you feel.

It's a good general point, however - do you go with words or actions? You get an instinct about actions that don't quite match up to the words, and it's wise not to ignore it.