Anamoly scan - baby empty stomach

Su
I had my mid pregnancy Anatoly scan. The doctor said everything was fine and asked me to come back in 4 weeks for another sonogram since they needed to recheck baby's stomach cause it was empty. She said everything was normal and dint sound concerned about it. But I have been feeling a bit worried and nervous since I read some crap on the Internet. Should I be worrying so much😖