well for me my uterus tilts to the left and I had no problems with my first child and so far so good for this one. But you might want to ask you doctor more question since everyone is different!!
I have a tilted uterus myself. It is tilted almost over itself. It is actually righting itself as the baby grows. I do have more back pain though...since this is my first I am not sure how that will effect labor or delivery though. My doctor has not really voiced any concerns though. The nurse who did my ultrasound at 7 weeks turned to my boyfriend and told him he has strong swimmers since my uterus is almost completely cut off.
Yes, I have a tilted uterus, nothing to worry about.... This is my third and I get back pain but not from my uterus, just having a big basketball out front hehe, im 29 weeks today (almost there!)