I have had five days of fever, chills and headache. Fever seemed to break yesterday so I was hoping to feel human today. Unfortunately I now have really awful pain in my back and ribs when I breathe or eat. Is this likely to be related to the flu? Not wanting to dripfeed, but I have been having physio lately for lumbar pain related to diastasis recti, I also fell over when running on Monday (just before this started) so am wondering if the pain is unrelated? Wondering whether it is worth a GP trip or wait and see?