I have a history of Rugby and Boxing. Sometimes you take a hit and get a bit slow for a week. Symptoms like these can be very short-lived, let’s hope it’s one of those. I wouldn’t start worrying about permanent damage at this point. In terms of home remedy, please go out and buy some high strength fish oil. Take 2-5 capsules each day with food. Fish oil contains Omega-3’s, they’ll be instrumental in brain repair. Make sure you’re drinking plenty of water, so your brain has the resources to clean and flush itself out. Otherwise, if it stays like this for a while or gets worse, see a doctor man. They can refer you to a neurologist.