make sure your paracetemol have not 'expire'. usually once you got the medi from pediatrician, after 6mths, you must throw away the medi, unless the medi is from original packing. but i doubt paracetomol comes from original packing, usually the clinic 'repack' again, so better check the date they PRESCRIBE you the medi, check whether has it pass the m6ths 'expiry' alrdy..
if your baby is having fever, continue to feed paracetemol until the fever goes down. btw you might want to call up the clinic to check the dosage, cos usually the dosage givin if 'count' by their weight, not age. at the meantime, you just follow the dosage given by pediatrician last time. =) and if after 3 days, fever goes up n down, then you should bring him to pediatrician =)