Hey reckon jas, my sis just had a baby and she had gestational diabeties the docs reckon he would be 10 p which is a load of crap he was only 8p9 and with me they said my baby would only be 4p he was 6p7 so im sure he will be the right size.
Although you will have to take insulin after you have the baby it will 99% go way in most cases and they will just check your babies sugar level butmost cases are fine to so try not to worry too much and just relax with your preg.
Ebonee