My face is swelled up from ?

ok heres my pickle.... my throat hurts on thursday 2 days later i was deep into having strep .. anyway i started taking cefadroxil for 5 days worked beautifuly i stopped taking em early 2 days later my throat hurts again and is enflammed so i take cefadroxil for 3 days strait on the third day i wake up my face is swollen my neck has slight rash .... but im kinda thinking that since the day before i was working with hay all day which i was covered in and was going in my eyes is what did it cuz the night before i woke to see my face i was very itchy on the neck ..... its the first time me having real contact with hay ....