That doesn't sound good..... It's a killer this year. My arm was swollen for 3 days, tender for another 2, and weak for about 1.5 weeks.... if I get the flu this year I'm going to be pissed!
my arm wasn't even red! But I continued to have headaches on and off all weekend - nothing serious but niggling. though there also has been some sort of a virus making the rounds that has been causing headaches amongst other symptoms, so who knows??