Went from 475cc to 1000cc 2 days post-op! What should I do?

Larger breast implants do tend to feel firm;  however, over time the breasts do tend to "soften" to a great degree.  Given your concerns, I would suggest that you communicate directly with your plastic surgeon; keep in mind that no two patients are identical (what I recommend to you may be different than what I would recommend to a different patient with similar concerns).  Best wishes.