My throat hurts after giving a BJ...

So my man and I just had sex for the first time the other night and I sucked him off for a LONG time (we had a little case of alcohol dick), swallowed, and woke up the next morning with my throat on fire. I thought that maybe it was just because I was getting sick but it happened again today right after I finished performing oral and swallowed. Dumb thought, but could I be allergic to something in his cum? Has this ever happened to anyone else?? I'm so confused lol