Hcg or ultrasound?

Newmomma888

I went into the ER today because I was feeling extremely dehydrated. They took my HCG levels which came out to 21606- which should be the end of 6 weeks? But my transvaginal ultrasound only measured a gestational sac of 1.1cm and no fetal pole yet, dating me to 5 weeks 1 day. Below is my paperwork. Should I be worried? Which one would you trust more? Maybe my levels are just high?