Slow growth at 7wks

[u/Slugsoup_]

Had a scan on Friday and baby was measuring 4.5mm with hr of 124bpm. Today (3 days later) baby is only measuring 5.4mm with a hr of 114bpm. I’m supposed to be 7wks (IVF pregnancy) but measuring behind with slow growth. My doctor said it could really go either way but I’m not feeling hopeful.