Worried and concerned?

Kristian • I have 3 precious boys 💙💚 and 4 precious girls!💗26🦇🕷️taken 🥺✨💖

I got my hcg blood drawn I was 4weeks on the dot when I got it done and it came back 37 I feel like that’s low and I should be concerned… and Input or other experiences from yall would be nice I’m hoping everything’s ok and I’m just worried for nothing.