Incognito,
There's a good reason your T isn't rushing to reassure you. Actually there's a few good reasons. Just telling you that might make you feel better temporarily but you probably won't believe it long term. what's going to prove to you that he's not frustrated and not getting tired of you is his consistency in being there for you.
I had serious trust issues with my T, I'm still working on some of them, honestly. Not because of anything he has done, but because of my past experiences. But I have come to trust him. I remember discussing trust with him once and him telling me that saying he was trustworthy to me wouldn't have done anything because all of my experience was screaming that of course he wasn't trustworthy. I deeply believed that trusting someone and getting close to them was just setting yourself up to be severely hurt and disappointed. So the only choice he had was too remain still, and BE trustworthy until that new experience with him, over and over and over ad infinitum would eventually overpower my past experience so that I could see that he was trustworthy with real evidence to back up the belief.
The other reason a T won't reassure you, is because often when we feel these kinds of insecurities and doubts about the relationship, it's really us trying to enact or embody feelings and/or patterns that we are probably not even aware of, and if we were we couldn't articulate them. We are in a sense "forcing" our T into playing out their part in our past bad experiences. Therefore, if what you experienced in the past was the feeling that your attachment figure was dissapointed in you, that they thought you were a big loser. Which is pretty painful to realize. But you need to own and understand the disavowed experience which was too painful and difficult to face at the time because you didn't have the resources to deal with it. If you're T gives you a patch, it may make you feel better for a short while, but it ultimately won't address the real problem which is your need to mourn that these are the feeling and attitudes you received from people who should have given you so much more. There's a "frustration" to therapy. Your T will not hold out a false promise of providing something for you that he simply can't in reality provide.
I think of it this way. In therapy, a client can talk about anything, but must not act it out. A therapist will not talk about his feelings, but act them out. They can not make the pain go away, but they can provide a safe place for us to deal with it and heal from it.
And I understand you being worried about working through the transference. I've lost count of the number of times I've decided to quit therapy.
But working through this, taking ALL of your feelings to your T especially about him are where the work gets done. You need to experience a new way of relating which means you need to relate. Its really hard sometimes and unbelieveably painful and this is not the last time you'll feel this way, but you will heal. Keep doing what you're doing and you'll get through it.
And last but not least, don't underestimate the effect of a good session. That means you moved closer and were able to express some of your feelings. Which more than likely triggered a "getting to close, I'm just going to get hurt again" reaction. These feelings of it being over are just an attempt to give you an excuse to leave in order to "protect" yourself. How do I know this you ask? Because I've done about 1001 variations of it over the last two years. Its strong, subtle and you will impress yourself with your own creativity.
Talk to your T about your worries about the working through the transference. That he can reassure you about.
And hang in there, I know this is really painful, but you will feel better.
AG
PS True North, thanks for the endorsement but I think your answer was quite intelligent and insightful.