I understand the pain after the neulasta. My mom was doing fine on chemo alone. She agreed to have neulasta and my mom passed away 10 days after this injection. The bone pain she experienced was nothing like they described, in fact, they made the side effects seem like nothing to be concerned about. Her doctor actually never explained the side effects of neulasta, only the chemo. When you are at the mercy of your doctor, you have to trust they know what they're doing.