I have gone through your problem. A past history of small kidney stones on the left side and now having left flank pain
radiating to the left pelvis indicates that the small stones have slipped down and traveling through the left ureter and got blocked at some point in their course. Now they might be causing obstruction to the urine flow from kidney to the bladder. This can cause Hydroureteronephrosis. A history of fever in this situation indicates an infection in the obstructed urinary pathway and demands an urgent medical attention. Due to this you may be extremely lethargic.
History of anemia may be due to excess loss of blood during menstruation
or it may be due to iron deficiency anemia
. You need to consult your gynecologist if you have excess bleeding during menstrual periods. If you don't have any issues with your menstruation, then you need to consult your physician and get an peripheral blood smear, iron profile, and serum folic acid
and vitamin B12
Change in bowel habits and diarrhea
may be because of the antibiotics you have taken.
My advice to you is that you need to consult a urologist
immediately and get evaluated. You may need hospitalization and intravenous antibiotics. Depending on the size of the stone, the level of obstruction and the severity of obstruction further management differs.
Wish you a fast recovery.