It should get better soon i was exactly to same, all i ate was choc, crisp, and anythin eles sweet its just becus ur body is low on suger so you crave it, i even had to go into hospital but this is only becus i was also throughing up alot couldnt even keep water down so i was dehidrated becus ur baby has everything it needs from you,and your body stores all the vitamins ect your baby needs the baby will not be harmed at all i went down to 6.5 stone and im now 22weeks my baby seems to be healthy im now 7.5 stone, and i started to eat proper food at about 16weeks now i cant stop eating and pretty soon you will be the same.
Dont worry about the baby just eat what you can when you can, if you like choc i was told to eat dark choc becus it has alot of iron init, and drink as much fluids as you can to stop you gettin dehidrated and then all of a sudden ull get this boost of energy and ull be able to eat proper food.