People are not so smart.

I think I have said on here before that i have wonderful coworkers.. This is true for 99% of them.. They have all been amazingly supportive to me, each in their own ways of course.. Most of them are younger than me and only a few have kids and even fewer have plans of having anymore kids.. So..while most of them can't really relate to what I'm going through... they all at least try to do/say the right thing..
Until today. A certain coworker of mine.. I don't consider myself particularly close to her, and certainly not someone who I find to be a compassionate person. Ironcially though, she confided in me, around the same time Jeff and I had started trying to get pregnant, that she and her boyfriend were going to stop avoiding getting pregnant. There are many reasons why this is a bad idea for her.. but that is another story for another time.. She informed me today that she had "a story" to tell me.. I assumed it was some sort of gossip about other coworkers.. but in fact, her story was that she had a dream that she was pregnant.. and she informed that this "Almost always" meant that someone she worked with was pregnant..
Me: "So are you trying to ask me if I'm pregnant? Because I'm not.."
Her: "No.. I'm not.."
Me: "Well did you know I WAS pregnant?"
Her: "No..." (Pause) "Well.. maybe I kind of did.. Cori told me but I wasn't supposed to tell you I knew. ."
Me: "Yeah.. I was.."
Her.. "Well what happened?"
Me: (completely unsure how to answer the question since it was obvious.. "Nothing good.."
Her: "Well were you trying?"
I don't remember the rest of the conversation exactly.. but i recall her being completely insincere and noncompassionate about the entire thing. I then determined that she had known about my first miscarriage and not the second one (I asked her how recently she had been told about it)... So I told her that was the first one.. and for whatever reason, I told her that the first one had happened really early in the pregnancy, I guess to explain to her why I had never told her about it..
Her response..
"Oh! Well no one knows about this.. but a few months ago, my period was really heavy and I had really bad cramps.. I'm pretty sure I had an early miscarriage too."

I of course was infuriated inside.. but all I said to her was.. "Oh.. yeah.. that happens sometimes.." and that was the end of the conversation..
If she knew about my miscarriage.. why on EARTH would she tell me about her dream and say "it almost always means someone I work with is pregnant.." Its just ridiculous.. not to mention insensitive.. And furthermore.. why would you just assume you had a miscarriage? And tell about it to someone who HAS?

I just don't understand people..