Have had 2 Neulasta injections--last 1 was Nov. 3, 2015, pain began about Nov 13 & has gotten worse. What can I do for the pain? How long will it last? Does it cause other conditions, such as chronic bone aches/pain, changes to my body's ability to make too little or too much white blood cells? Is there a medication I can take to reduce the amount of pain? Why was Claritin helpful to some immediately after the injection. Thanks for your help. Mary P. 12/17/2015