I Have Been On Bydureon For Seven Months. I Have

I have been on bydureon for seven months. I have been nauseated and vomited three times since yesterday. I took the injection on Tuesday. I don't need the med for my Aic as it is 6.0. My doctor put me on it because I am gaining weight and thought it might help with weight control. It hasn't and I don't feel good. I am dizzy and have headaches too. I have had injection site bumps that eventually go away. I had a head injury and 30 stitches about 5 weeks ago. I had a CT scan and there were no bleeds but I really have not felt good. I am 67. My BP and temperature are normal.