I had amoxicillin in June last year. After an operation. Within 3 days of taking it. I'd ballooned out. A size 10 usually. I looked like I was 8 months pregnant . My genital area swelled to double the size. I called the doctors everyday but didn't realise I was allergic to penicilin. The Docter advised me to call an ambulance if I felt I couldn't breathe properly which was already happening. And you kinda go into shock when you hear that. I called my friend to quickly bring me some antihistamines.id previously had a reaction to antibiotics about 5 years ago. And I was itching all over and within 2 hours again my lower torso started swelling. And huge blisters started appearing. It's only now. I was told by Harley medical group nurse. That afew antibiotics do have penicilin in. And given a different name. That's why it wasn't picked up on. And 10 years ago I was on antibiotics that made me appear with brushing on my legs and my joints start seizing up. Like I had reumatism. As soon as I stopped taking them. I was fine. Again It was picked up on that they contained penicilin. And all those symptoms are different. Personally I'd watch what antibiotics you're given in future. I was told I was hypersensitive to some of them.