Contact Biogen Idec (or your nurse from there that trained you to inject) they have an assistance program. I think that there is another a few other ones but I can't think of them right of hand, but someone else might know and will post them. But start with applying for Bigen Idec's program for now.
Definitely call Biogen, they are very nice and will walk you thru it. I used them when I started Tysabri and they paid for the first 3 months themselves until my insurance became effective. But I was approved for 2 yrs worth.