Hi Sterla!

I'm not sure on the exact stats of missed miscarriage (I think that's what it's called when bub stays inside), but I do know that as each week passes the risk of miscarriage decreases quite a bit.
I think missed miscarriage is pretty rare though. I would say that, like many unfortunate things, we read about it a lot because the people who experience those things come online for support and to debrief.

Are you having a scan around 12-14 weeks? It's not long til that now, you're right, I think most people worry though. Have you popped into the section on all the pregnancy symptoms, I found there were some I hadn't acknowledged, and the more symptoms you can feel, the more you 'notice' being pregnant and that might help ease your mind.