To answer the question you asked, yes this can be a kidney infection.
The headache is also concerning, and extensive disc problems in the spine might be contributing to your symptoms.I would not wait and wonder about this, but go in to the doctor right now.
There is no way we can blame this on the medication with this extensive of symptoms, which could imply a systemic problem, such as infection.You need a urinalysis and exam immediately. Kidney infections are serious and can become life threatening.
Kidney stone should be considered as well.
Pain on the left of the abdomen can be pancreatitis, a bowel problem, or stomach ulcer, for starters.
With this degree of illness though, it is no time for guess work.
A terrible headache with dizziness can be a bleed into the brain, rarely, viral meningitis, or other serious problems, so again, have someone drive you to the doctor or the ER.
I am a double board certified US doctor with over 20 years of experience taking care of patients hands on. That is what internal medicine doctors do, and we are responsible for adult medical care in all sub specialties.
I can answer any further questions you might have.
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