bfp 🌈 - so scared

Becca • RN, mama to two daughters, recurrent pregnancy loss survivor, 🌈 baby # 3 on the way
Just got a bfp immediately after a miscarriage (never got AF). First beta was 3570, will find out tomorrow if it's doubling. 
So far I have sore boobs, nausea, bloating, mild crampiness.  Had one episode of pink tinged CM after a BM (sorry TMI) but nothing concerning since. 
But. I'm so scared. Last m/c was at 5w2d, which is where I think I am now.
How do you guys reassure yourself that everything will be okay? Any tips would help!