HCG levels

Jen
TTC from 2 yrs...one mc, one ectopic in which I lost my tube during this time. Went to fertility specialist and got pregnant my first <a href="https://glowing.com/glow-fertility-program">IUI</a> with the specialist (tried 3iuis at OBGYN and did not get pregnant). I am what should be 5 wks and 1 day. My HCG is only 419. I'm worried. Anyone have any experience with this?