If you are worried, I would ask your Dr. what that means. The uterous stretches to accomodate a pregnancy. I don't know if you have kids or not, but if you get pregnant, I would just assume your uterous would strech to accomodate the baby. Just think, some women have twins or triplets with average size, so obviosly it just stretches and stretches.
I was told when I was in my early 20s (before kids) that my uterous was tipped at an unusual angle. It did not affect my fertility, but all that meant for me was that the Dr. can't detect the heartbeat until a little later than they normally would because of the angle of my uterous. But I have 3 kids and another one brewing so my unusual angle did not affect me.
If you are planning on getting pregnant, I would call your Dr. Otherwise, just make a mental note to ask next time you go in.
Marci