Your feelings are valid. Therapist usually know weeks if not months in advance when their vacations are. Especially if you haven't been more than a few days without help and he knows about your needings surrounding seperations.

There have been a few times I've gone a week without therapy, so that's a total of two weeks not seeing T. That was still aright for me. My other T usually told me about two weeks in advanced. Last summer she was away for 2,5 weeks, but I couldn't see her for 4 whole weeks because there was no time available. She said things like ''time will fly by'' and ''you can do this''. After two weeks it got harder for me. And I was a little bit angry about her acting so easily about it.