a year ago I was admitted to the hospital with horriable migrains, they prescribed gabapentin 3x a day, due to a fatty tumor that is on my spine, I have a constant migraine every day of my life, now I have swollen lepnoids in my right arm pit that has been here for over a month, when I take my medication I throw up, and I have gained about 35 lbs since starting this medication even though I can not keep anything down. please help.