seen an obgyn who tells me shes had several patients on betaferon during pregnancy, I also have the choice of weaning off while pregnant.
she explained no more risk level than normal pregnancy, generally lower birth weight however no developmental issues
recommended bottle feeding so I can rest when i need to and get back on my treatment after giving birth.

she also mentioned I can elect for a c section as my ms could be flared from going through 40 hours of labour plus ms patients generally exhausted after small amount of activity

YAY! she also looked and me and freakishly said id be pregnant by January and shed see me again then as if she had psychic abilities