I don't know if I overwhelm people with my oversharing tendencies, but I sure have freaked some people out over it. In some ways, I struggle to understand boundaries and know what is too personal. If a thing seems relevant to the conversation, I say it. Only later do I find out that what I said was not a thing most people would (or even should) say. To me, it was related to what was being discussed. Why wouldn't I say it?
As it happens though, on the flip side of that, I'm also prone to not sharing enough. Go figure. I swear, sometimes I make no sense... *shrugs*