One of the negative indicators listed on my credit reports is that I have a short credit history. 12 years, 9 months. I'm 31 y/o. Couldn't really have a longer credit history at this point in my life. lol. Just tought it was a little funny that as long as I've been allowed to have credit, I have had credit. Oh the joy if the credit game!
I am a lot older than you and my reports also state that I have a short credit history. My oldest line of credit is 19 yrs. My aaoa just turned 7 yrs, and I having nothing showing under a yr and a half in age. You just have to grin and bear it.