<s>[INST] I have been having back pain for several weeks and had not had sex for a couple years because my boy friend has been away, i occassionally use lello balls or luna beeds because of stress incontinence. i increase my fluid intake because i thought maybe dehydration but now back pain is gone and I have a small round sore on my labia, no burning and light vaginal discharge, no pain from the lump or sore.  email. [/INST] HIThank for asking to HCMYour backache could be due  to Pelvic inflammatory disease, your vaginal discharge need to be rule out for fungal infection and this might be the cause of your backache, I usually treat my patient empirically and I get a good results, here I would advise you to start the Ibuprofen 400 mg twice a day for backache and along with this take Metronidozole 600 mg twice a day for just two days, will get  good result, have nice day. ( Best way to deal with this is live stress less life) </s>