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Thanks for providing more information.
Well as you describe,constipation can cause lower abdominal pain and it can be associated with Irritable Bowel syndrome,Diverticulitis.
Other possible cause may include Ureteric colic,Urinary tract infection.
You should try some self care measures like
Hydrate yourself with plenty of fluids.
Also take metamucil and Simethicone.
You should eat fibre rich diet.
Try Duloclax laxative.
You can take OTC Motrin.
Warm compresses with a heating pad on affected area.
If pain is severe then visit ER.
Otherwise make an appointment with your doctor for a colonoscopy,Ultrasound Whole Abdomen & urinalysis for further evaluation and management.
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