I asked my partner if we had any paracetamol for a headache last night. He said his mum had given him a strip earlier and gave me two.
Went to bed and a couple of hours later woke up itchy all over to the extreme. Also very woozy standing up. After two hours awake with this I asked my partner to check tablet strip and it was paracetamol and aspirin. 
I've never had aspirin and would assume it's that. How long does a reaction to something like this last? I haven't slept much and still feel quite sick although the itching has calmed down. I can't find advice online for when it will be gone, I was hoping it would be quicker than this. Thankyou