For the past fortnight DD (17 months) has regularly been getting a fever (39c+) and distressed (say maybe 2-3 times a day max). Inbetween these times she is generally okay if maybe a bit ratty. I have taken her to the GPs twice over the past fortnight with no obvious cause found. She has had a UTI before (so I suspected this) but urine sample last week came back negative for infection (although contained white blood cells). No obvious ear infections (also has had these before). GP has said her glands / tonsils are slightly inflamed (but not infected) and therefore feels it's something viral. However DD has no obvious cold or similar and I would have thought if it was viral it would have passed by now. DD's temp just now was 39.6c and she's upset again.
I'm giving calpol / neurofen as needed but am confused as to what the underlying issue is. Plus me and DH are shattered (DD was up crying until 1am). Any ideas?