Hello and thank you for posting your medical question on E health forum.
From the description provided it could be a urinary infection or a over distended bladder due to some block in the urethra, stopping the flow of the urine.
the best way to diagnose this is a urinalysis and a ultrasound of the pelvis.
This will help in diagnosis and specific treatment.
You might consult a urologist for the same.
I hope this helps.