I'm with you and reading all these posts have really helped. I too spent hours looking for miscarriage stats and reading signs into everything my body was doing. I had an early scan last week and everything was perfect, but immediately after I was still looking at stats for "miscarriage after seeing a strong heartbeat"…
There have been times when I even wished I wasn't pregnant just so I didn't feel so scared the whole time…
But I too have realised that all I can do is continue to have faith, to be grateful for every extra day that goes by with nothing bad happening, to remind myself that you hear so so many more bad stories than good and that the odds are OVERWHELMINGLY in my favour for things to go well. If I had a 90% chance of winning the lottery, I'd play, and it's the same.
And equally importantly, I've tried to stop googling things, to stop reading the sad/scary stories (I'm so sorry for the posters of them, but they were just making me crazy with worry) and just to go with it. The internet is a blessing in many ways, but it's also a curse. I've now found two good, reliable pregnancy websites, written by experts, and go to them for information about things, rather than turning to weird, potentially erroneous websites (of which there are loads). Over-obsessing about it is bad and I've had to be really strict with myself (I've got quite an obsessive personality like that!) but it's made me feel a lot more positive.
I've set myself little goals too - every evening I thank God for getting me and bean through another day, and ask Him to keep us safe for just one more. I'm not thinking about being safe until July, just until this evening, and then tomorrow evening, and so on.
Hope this helps - you're being totally normal, but you maybe need to find some coping mechanisms, otherwise you'll drive yourself crazy.
xx