Hi I Have Been Having Vaginal Pain And Uterine Cramping

Hi I have been having vaginal pain and uterine cramping for about 3 weeks. I had been having vaginal burning and irritation for two. I went to the ER three days ago and was given diflucan 150mg every 72hrs for 3 days. I’m three days into this treatment and am still burny and irritated and crampy. Plus the Dr who examined was jabbing at my urethra while first inserting the speculum. So now I am burning a little on urination. I was tested for the usual STDs and all were Neg. thanks!