I feel like im having a hard time communicating with my therapist and its not his fault

Everytime i go to the therapist i have a hard time communicating my feelings. I have a ton of shit i could discuss but i either dont know how to put it into words or am not comfortable.

For example, i hate my body and i hate being seen. I am extremely uncomfortable dicussing something like that with anyone, not even my best friend. There are a ton of other problems just like that where i am too insecure to mention that to anyone.

Also it depends on my mood. Yesterday I was crying and hitting walls in my house. Today wasnt great but i listened to really loud music before the session and it took me off the bad emotions. As a result i didnt know how to respond to most of his questions.

I dunno, i feel like everytime im there im either struggling for words or blacklisting stuff from coming out. No fault of his, he is really nice and its only my 3rd therapy session ever.