No, it happens to me all the time. Like, I can feel it building and building in my chest and I want to be able to let it out so bad but I can't. I don't know why. It sucks though because I can get sort of self destructive. But the flip side of that is weird because I also hate crying - I just know I'd feel a lot better if I could. So, no, you're not a freak. I can totally relate. I don't know how many journal entries I have that say something like, "My chest is so full of tears it feels like it could explode," or, "I want to cry so bad but I can't."