That's so normal. That happened to me when I first found out I was pregnant. I was sick and went to the ER and was told I was pregnant. The ER Dr wanted to do a ultrasound and he was like no baby no heartbeat. I was like what??? I went to my OB like 2 weeks later and baby was a peanut by then. No worries and good luck.
This is very common. When I had my first ultrasound they looked and looked and couldn't see anything. She told me to relax and after a couple deep breaths tried again. She found the baby that time but it was so little it looked like nothing to me.
This happened to me. I had my first ultrasound and 4-5 weeks. And it was so early the OB couldn't see anything I started crying and etc. But went back 1 week n half later and there was my baby . It was so tiny! Try to relax and not stress about it . good luck!
Im guessing your prob 4 weeks then
Nothing showed up for me until 7 weeks
Don't worry! You're super super early!!!