What do you do if you feel your T is not 'getting' you?

It's happened a couple of times. Once, I was talking about how I was worried that a certain kind of therapy would not work for me and he just deadpanned "That's because you're so pessimistic". Another time, I think he was tired of hearing me complain about my family, he asked "What did they do to piss you off this time?", but in an annoyed sort of way.

Maybe it is just my own interpretation given my current emotional state, but I felt misunderstood, not validated, like he was reinforcing the negative way I feel about myself. Like I just exaggerate my problems, you know, make mountains out of molehills. He seems annoyed, really tired most of the time, so I try not to take it personally.

I don't think it's a lack of communication, because I'm actually quite good at articulating my feelings.

Any thoughts?

Thanks.