I didn't know until I started bleeding, but once I saw the bleeding, even though it wasn't much then, I knew what was happening. Of course it got worse over the coming days, but as soon as I saw it my heart iced over

I think that people who just *know* they're pregnant, without testing, are the ones that *know* when they miscarry - I don't know why, I don't think its just because some are more in tune with their bodies, because I'm not in tune with mine. LOL, sorry, not much help to you