I don't think you should worry, but I know I wouldn't be able to stop myself from worrying. I'd call and see if they could check again or do an u/s just for your peace of mind. Why spend a month stressed out?
Mommy to sweet daughter
K Nov 2011 &
N May 2013. Wife to wonderful husband D since Sept 2008. Always remembering baby J 10wks Missing baby Q 13wks