I need peace of mind

Ashton
Ladies, I have PCOS
I am 4 weeks pregnant after <a href="https://glowing.com/glow-fertility-program">IUI</a>. Back in December I had a chemical pregnancy or an early miscarriage, my doctor never specifically said. My HCG levels only got to 22 at the highest. My levels so far were 122 and 500. I have had some very  mild cramping, almost like a light stretching on both sides. But that's all!
I hate to even say this but I don't feel pregnant! I want to be sick, I want to feel something. 
I go back in 2 weeks for the ultrasound and   I'm a nervous wreck. I'm scared something will happen! We've been trying for 18+ months, I just want this to be our time so bad! 
Please fill me in on your experiences.