I have had the SAME EXACT THING!!! The 1st time I had the shots I was at a knee specialist. He stated that it wasnt cortisone but a different med that does the same thing just better for you. Never could pronounce it!!! I started going to my family Dr to get them cause I trust her fully. However I got cortisone shots from her and was okay that evening. Woke up the next day and face was on FIRE, HOT, RED, FLUSHED all the above. BP was 170/102 was ILLLLL to my stomach like in knots and the WORST HEADACHE I have EVER had in my LIFE!!!! I will NEVER EVER do this again its HORRIBLE!!!! I took Benadryl and just knocked my miserable self out. Today is day 3 and I am still red and still major headache!!!!! Your not crazy and your not alone this is from the shots!!!