At what point does it stop? 😫

I had a missed miscarriage back in April and the fear of it happening again has PARALYZED me. I can’t stop testing and I’m 4 weeks and 6 days. I don’t know when I’ll even be satisfied...when the line completely disappears? I have to have a repeat hcg level taken Thursday. Last Thursday it was 327.7...God I’m praying it went up.