Why beat yourself over it? If he allows contact and emails, and you feel you really need it, it is perfectly ok to reach out. Just to make sure the contact is still there. We do not always need to be enough for ourselves. That is what the support is for. That's why you are in therapy. I'm glad you listened to yourself carefully and reached out when you had the need for it and that he replied kindly. Just like it is supposed to be.