Symptoms to look for and monitor include headache, dizziness, confusion, fatigue, nausea, slurred speech, ringing in the ears, temporary
loss of consciousness, and amnesia about events leading up to the injury.
https://www.webmd.com/brain/concussion-traumatic-brain-injury-symptoms-causes-treatments#1
So, hopefully you recovered nicely and all is well. See your doctor whenever you have doubts.