Thanks for all these additional information.
I understand your concern.
Well as you describe,possible causes may include Infection,Intestinal spasms,Ureteric colic,Ovarian cyst,Diverticulosis,Urinary tract infection.
You should try some self care measures like
Hydrate yourself with plenty of fluids.
Also take OTC Motrin or Naproxen and apply warm compresses with a heating pad on affected area.
You should eat a bland diet.
Also try Mylanta gas.
Start a probiotic.
And take metamucil.
If pain'll not improve over the time then see your doctor or visit ER.
Ultrasound whole abdomen,urinalysis should be done further.
Let me know if you have any further query so we can discuss it thoroughly in every aspect.
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