Could it be a false positive??

Dominique ✊🏾✊🏾⭐️⭐️⭐️ • 16 weeks with my 🌈 👶🏾 😍
I took a few pregnancy tests a week ago after trying for a year, and they all came out positive...
I went to the doctor this morning for my first ultrasound, and the tech was unable to locate my GS. I am literally FREAKING OUT! She said she could see the beginnings of what may be the sac, but it also could be a cyst.
The doctor wants me to come back next week for another u/s. Has anyone had a similar experience? What was the outcome?
I should be about 7 weeks based on my LMP, but she says she thinks I'm a lot earlier than that. They didn't have my blood work back yet, so they didn't know what my HCG level was when I came on Monday. They did more blood work today!
I'm so scared!!!! 😩😩😩😩