Glow ladies making me paranoid...

Jade • TTC since April 2015 for baby #2, have a 5yo girl, have been with hubby for almost 8yrs, hoping to be blessed again :)
Not everyone and not meaning this in a mean way, but I feel like when I scroll thru most of these posts, they're all talking about mc's and chemicals and whatnot, and it's making me worried that it will happen to me, even tho I'm not having any signs/symptoms and haven't had any in the past, just one healthy baby who's now 5. Anyone else feel like this? Is it normal to be this worried about it?? I just want to enjoy this pregnancy since it's the last one I'll be having..