Getting Hit on the Ear After Otoplasty?

If your ear is looking the same as it did before it was hit, it is likely fine.  The sutures used on the ear cartilage are typically permanent and if they are still in the right place, your ear would look unchanged.  That being said, anytime you have any concern postoperatively, you should discuss it with your surgeon and go for a check-up if needed.  For instance, sometimes significant shearing ear trauma can cause new swelling under the skin, indicating possible fluid/blood collection (seroma/hematoma) which could put the ear at risk for cartilage loss and permanent deformity, if not addressed by the surgeon in time.  Good luck, and best wishes for an excellent outcome. 

If the ear otherwise is without increased swelling, redness, or shape change, I wouldn't worry too much about it. You can't reverse the past incident. The question is, what are you going to do in the future? Although subtle relaxation of the otoplasty may still occur over the next few months, as time passes the ear cartilage "solidifies" into its new shape and no longer relies on the sutures. While an otoplasty is an investment, and certainly you want to protect your investment, at some point you need to live your life. Enjoy life with your otoplasty!