My husband has just had his second neupogen shot in two days and he has now started to vomit. He has had SEVERE stomach pain for a couple days and saw the onco yesterday. Well his WBC count was low so he was prescribed a neupogen shot a day for 3 days and IV fluid. All of this other symptoms (sore mouth, swollen tongue, sore back, joint pain, etc) are now gone but his stomach pain is still the same. He has started vomiting (only 3 times today) now. Is vomiting a side effect of neupogen? He sees the nurse again tomorrow and he will ask then but I was looking for your experiences.