<s>[INST] I fell over today while ice skating and hit my head hard falling backwards onto the ice, I felt weird once I was hit my head and wen I got up but then after sitting for 5 minutes I was ok , but after about 2 hours I ve started to get a headache and fell asleep this afternoon as was hurting . [/INST] Hello,Thanks for posting,You need to get a bed rest after taking some analgesics such as acetaminophen or ibuprofen or aspirin. Ice pack will also be useful in relief.If headache persist, just book an appointment to see a doctor who can examine you and request for CT scan or MRI just to be sure that it is nothing severe.I am sure you are having just a mild concussion that will subside subsequently.Regards </s>