eileen: dun despair, diff babies grow at different rate. maybe your baby not yet 7 weeks. is the doc a reputable doc? sometimes docs make mistakes too. stay positive. big hugs!
ni: ran when carrying your boy! better dun lar hahaha...
shermine: i'm also wondering about the same. my internet research says that it is safe if your pregnancy has no complications so far. some docs advice against because generally 1st trimester very dangerous, so if touchwood spotting/miscarriage, and you are in foreign land or on plane, very troublesome.
i would say, check with your gynae who will know your condition and he/she can advise accordingly.