BFP and anxiety

I had a mmc in May (was 12w, baby measured 6w, it passed naturally a few days after the scan, coincidentally two days before my wedding...). I’ve had faint lines since 9dpo that are gradually getting darker (I’m 11dpo today and it’s a pretty obvious yes now), and all I feel is terror.

For background, my previous (and first) pregnancy, I conceived the first cycle we tried. We’ve also conceived first time round again now. I’m trying to stay calm and not stressed and even happy about it, but the fact it’s been so easy to conceive makes me convinced something is going to go wrong, like it shouldn’t possibly be this easy! I don’t want to jinx myself and have another early loss as if I’ve thought myself into it.

Positive stories and experiences if you have them, please?