Hi welcome to Health care magic forum. as you are describing none of the tests suggested that you have malrotated
kidney, or your doctor mentioned about it. If it is there it might be a minimal change and with the relief of back pressure you can get it back to original position.
I advise you to
consult a nephrologist for diagnosis and treatment, because he is the correct person to tackle about structure and pathology of kidney. there will be solutions and you need not suffer life long.
Besides i advise you some diet recomendations for frlief, avoid taking spices, chillies, junk foods, and oily foods.
Take more of green leafy vegetables, pulses, sprouts, milk, egg, meat, sea foods , fruits juices, and dry fruits, to have resistance againest such infections. Wishing for a quick recovery and thanks for calling.