Lower abdomen pain, lower back pain on both sides, frequent urination, no temp, no nausea, no pain during urination, no vaginal discharge.

Still: Could be a urinary tract infection.

Early UTI: Usually a urinary tract infection is manifest by burning, pain, hesitancy, frequency, urgency, nighttime urination, odor, and cloudy urine. You could be having the beginnings of a full-on UTI with just the pain and frequency. This would be worth peeing in a cup to have your fp check you out for infection. Your first day of antibiotics could aleviate all of your symptoms.