mine too at week 5. just a sac. did transvaginal scan which seems more accurate in the early stage. i believe ur doctor advised to come back again for follow up?
Yes it’s pretty normal! LMP is just a rough estimation. The exact gestation age may be lesser than that! (:
You will be advise to come back in two weeks time. Mostly sac can be seen from 8 weeks onwards.
Don’t worry! Heartbeat is between 6-8 weeks