My DD is training new level 5 now and while she is doing back walkovers on the beam she gets lower back pain. It doesn't bother her any other time and never bothered her before while doing them on the floor. I took her Urgent Care and the doctor didn't think it was anything other than muscle strain and gave a prescription for an anti inflammatory and told her to avoid back walkovers/back bends for a week. Her back felt totally fine and went to doing back walkovers again on the beam and it bothered her again during practice but she is totally fine after practice is over. Any thoughts?