7 days ago I had a popping synsation in knee (5 knee surgeries in past 2 1/ 2years....then immediately following a severe headache with rapid breathing , heavy sweats, and feeling of loss of bodily functions. 25 minutes then on and off for 24 hours almost flu like symptoms but severe....3 days later and still today..at post7 days I have slight black eye and tenderness on forehead one spot directly on center on forehead..the other just below black eye.....I did not hit either area prior to onset....??