Couldn’t find baby in ultrasound ?!

Gabriele

So I am 4 weeks and 2 days pregnant . and doctor confirmed that I am pregnant he wanted to do a ultrasound only he couldn’t find anything at all on the ultrasound so they rescheduled me to come back in 2 weeks and he said we have to find something at the next apt. Do you think it’s to early to see anything right now? Or something is wrong ?!