Could Itchy Body And Cold Feet Be Due To Drinking While On Klaricid?

i have recently had a chest infection and went on klaricid tablets to rid me of the problem. I stupidly went out on wednesday and friday and drank heavily in university. since friday morning i have been itchy across my body but i have had no rashes. also my feet are constantly cold and no matter how many socks i wear they do not warm up. i also have a headache. Any suggestions of what this may be?