Hello, pregnant ladies and moms — how are you? I have a question: toda…

Hello, pregnant ladies and moms — how are you? I have a question: today I had an ultrasound and they told me I'm 7 weeks pregnant, but there's a gestational sac and the embryo isn't visible. Has this happened to anyone? What should I do? The gynecologist said to repeat the ultrasound in a week and we'll see then.