I hope by now you are feeling better or sought medical attention. I had these same symptoms last year and ignored them. They persisted for several weeks. I ended up spiking a 105 temperature and having to have emergency surgery to place a stent in my right kidney. Evidently, I had a kidney stone lodge and block off the uretha which resulted in a severe infection which had started poisoning my blood. I was extremely sick for a week and they then were able to remove the stone. Please go to your doctor and insist on blood work and a urine culture.
This could be some discharge from your vaginal area. If pain persists or gets worse, see a doctor.
You can actually buy an AZO test kit from any drug store. I've had a couple of UTI's, and used these strips before going to the doc. They've been accurate for me. Just an FYI.
if it were a kidney stone, you wouldn't be able to say the phrase 'isn't entirely too bad.' Kidney stones are worse than childbirth. Possibly a UTI - I'd have it checked out.