Hi , my conditions are C.I.D.P and lupus I have been having infusions of intragam for 9 yrs and have been changedq to octagam for the last 6 months, these are monthly infusions the last couple of months I have had really bad headaches and nausea the night of infusion and the next day as well even up to 2 days after , my question is why this is now happening ? And I have had weight gain , my other tablets include plaquinal,methatrxate and predisone, panadol and neurophen