I think some people are just ready to let it all out and that is why the seek therapy.. So, for you to let it all out, and cry.. is more than ok. I am sure that there are things, that won't come out right away that you won't feel comfortable sharing right away either. You go at your own pace. Also, just so you aren't shocked.. The first sessions with most Ts are a lot of questions, getting to know you type stuff.. So, don't be surprised if there doesn't seem like an opening to let it all out. Don't worry it will come!