Does anyone have a cyst??

Bre • Married•Mama to Jax & Tori
Went for my first ultrasound 4 weeks 4 days and all they saw was a "huge" cyst and no baby yet! Should I be worried!?! I'm going back Thursday for more bloodwork and another ultrasound and thinking about it makes my stomach turn!! I'll be 5 weeks 4 days at the next ultrasound