Thanks for writing your query.
Your symptoms- pain in lower right abdomen with dark urine- can be due to some disease in the kidney
Dark urine can be due to presence of blood in the urine.
You should get the following investigations done :-
1. Kidney Function Test.
2. Urine examination.
You should get yourself examined clinically.
Donot take any medicine unless prescribed by your doctor.
Your treatment can be planed after knowing the reports of your investigations.
I hope this is helpful to you.