Smoking and Birth Control

Ginger
I'm a smoker, and have been for a few years. I'm 18 and I'm on the nuvaring.. been on it for a month. I've taken two birth controls (pills) in the last 2 years and only took them for 3 months each because of terrible side effects. What's your opinion? Do you think i'm okay because i'm not over 35? I probably smoke 11 cigarettes a day. Thanks!