The medical authority can recommend an alternate event but ultimately it is the Commander who will decide. You might want to go back and see the medical authority and see if:
1. They can recommend another event. AR 350-1 states you need 3 months to practice that event. If your percentages come back within the 3 months you will most likely be out processing.
2. If you seriously cannot take any event you will need a waiver. So the doc will need to discuss this.