so I've been having some pretty bad back pain and some sharp cramping with some flu like symptoms…

so I've been having some pretty bad back pain and some sharp cramping with some flu like symptoms since noon. I have been pretty cold so I checked my temperature and it's 97.9 so I don't have a fever but I don't wanna bother my doctor unless I have too. should I be worried Or can this wait till tomorrow during business hours?