Hi, nausea could be due to antibiotics and pain killers, can persist for a few days after stopping. It could also be due to vitamin supplement (it has a typical smell). Lastly, Gemcal could be taken a half hour before meals, calcium when mixed with food can form insoluble salts and result in nausea & flatulence
in the legs points out to a nerve/ spine related problem (also could be related to Diabetes
if she has the condition), and will benefit from Pregabalin+ Methylcobalamin
preparations like Lyrica75 in consultation with you doctor.