18 Yo Female, Got A Flu Shot On Tues. Headcold

18 yo female, got a flu shot on Tues. Headcold was just ending when she got the shot. Since yesterday, feeling like another cold with sore throat. Felt ok today, other than sore throat, contestion in ears. Within last hour back of neck is sore (was slightly sore this am too) chills, headache, sore throat. feeling very poor. I know you can't get flu from shot, wondering if just coincidence, feeling bad.