Constantly worrying!

Forgive me, ladies, for venting! This is my third pregnancy: my son is now 4, and I had a miscarriage last year (blighted ovum). I sailed through my first pregnancy without worrying much - I was somehow confident it would all be fine. Now, having had the MC, I am riddled with anxiety - overthinking every twinge, every symptom or lack thereof, checking for blood each time I go to the bathroom. I'm driving myself insane!! I'm in the UK and they don't tend to check for rising HCG levels here unless there's an indication of something wrong, so I have nothing to reassure me. I've booked a private scan at 7.5 weeks, because I can't wait for the standard 12 week scan - now I just have to hold on to my sanity for another two weeks! x