Slow Rising Beta Feeling Concerned!

Je
<a href="https://glowing.com/glow-fertility-program">IUI</a>'er here. Procedure done on 1/4 and tested positive three days before my missed period. On the 18th, I went in for my blood work progesterone was awesome 40+. HCG was a 17. Went in yesterday morning for another blood test and my progesterone was still great and HCG had only went up to 24. They gave me the be prepared for a chemical or ectopic pregnancy spill. I've never been pregnant and this has been hard news to receive. Can anyone give me some positive outcomes and words of comfort or wisdom? I'm 4w2d by the way.