The last time I got a cold, it hung on for almost a month! The cellcept, I guess. I think that all the lupus meds not only make us more susceptible to colds, but they interfere or slow our ability to fight the infection. Not that I'm a doctor! LOL. Just personal observations. I had the same problem on methotrexate.
I hope you feel better soon!
PS - I have that low body temp thing, too. Have you had your thyroid tested recently? Also, do you ever experience night sweats? Low body temp plus night sweats could indicate a menopausal thing (not that I know your age). Other things to add to the list: hypoglycemia, kidney disease, and infection can also cause it to be low.
dx: SLE 07/2011, OCD 2006, osteoarthritis 2002
rx: CellCept 2,000mg/day, NSAID for pain, zoloft 200 mg