Hello Thanks for query . Severe pain in Rt kidney area radiating down anteriorly to epigastrium and anterior abdominal wall is most likely to be due to presence of stone either in kidney or ureter and need sto be investigated . consult qualified Urologist for clinical and digital rectal examination and get following basic tests done to confirm the diagnosis. 1) Urine routine and culture. 2) Ultrasound scanning of abdomen and pelvis In the mean while start taking broad spectrum antibiotics like Cefotaxime along with urinary antiseptic like Nitrofurantoin and antispasmodic like Spasmo Proxyvon twice daily and urine alkalizer thrice daily .Later on switch on to appropriate antibiotics as per culture report. Get the prescription of medicines from your family Physician. Ensure to drink more water .To keep your urine dilute This will help to control dysuria. Further treatment will depend upon result of these tests and final diagnosis as regards size ,site of the stone and degree of obstruction (hydronephrosis)to kidney due to stone . Dr.Patil.