As Of Thursday My A1C Is 6.2 And My Doctor

As of Thursday my A1C is 6.2 and my doctor wants me to do the Bydureon injections; I did the first one on Thursday and it went fine but reading the side effects makes me a bit nervous to continue. My A1C has been at 6 or so for the past 2 years, so 6.2 is high for me, but wondering if I can control this with diet and exercise? She wants to see me again in 3 months for more blood work. I am 60 yrs old, have high b/p and high cholesterol; I take meds for both. I weigh 254 and am 5'6" tall. I feel like the weight is from menopause and lack of real exercise ~ she mentioned insulin resistance as the reason for the weekly injections. It's all very confusing and quite scary~ thanks for your help. ~Karen