29 y/o f w/ 2 exophytic subserosal uterine fibroids on the right side of the pelvis. Anterior 6.5 x 5.9 x 7.3 cm; posterior: 10.3 x9.1x 9 cm. Surgery?

That depends. On if you are done having children, or would still like the option to try. Those are pretty big measurements, and could possibly complicate every aspect of pregnancy. They can also keep growing--sometimes very quickly and can get quite large. You are close to the threshold of being able to do a vaginal hysterectomy at all. Wait too much longer, and you might have no choice but abdominal. Talk to doc.