4 weeks 2 days Ultrasound

Hey guys! So a friend of mine did an ultrasound on me to see if we could spot anything this early, but she didn't even see the sack yet. She only saw a thick endometrium and that's all. I heard this is normal and it's why most doctors won't do one until 6 weeks along. Anyone else experience this? I hate the long wait since my ultrasound with my OB is on the 30th! 😣