Allergic reaction to Paracetamol?

Patient: Hello, I’m a 17 year old female and I had my third surgically removed operated 3 days ago. I’m afraid there were some complications during the operation since I had severe nose bleed until today. Also, there is some sort of a swelling on my tongue & my doctors didn’t give me a clear explanation on it. The problem is that I had an allergic reaction this morning characterized by (both eye) lid swelling, nausea, stomach cramps etc. Doctors explained it as an reaction on Paracetamol. I still have unpleasant pain in my throat caused by the procedure. What should I do, what meds should I take?

Symptoms: Nausea, stomach cramps, sweating, throat pain, tongue & eye lid swelling