If i have ddd and bulging disc at the age of 28, will i have for sure more serious issues with my spine with the aging process? p.s: i'm a smoker.

Aging spine: No you will not. The presence of degenerative changes and / or buldging disks is not uncommon as we grow older. In fact the changes which are often identified on imaging like MRI studies rarely result in symptoms. In some cases symptoms may develop or persist to the point surgery may become necessary. Certainly smokers healer less readily compared to non smokers.