In left to a side strong pains

[1]

The second day in left to a side of a pain, especially when I sit, I bend down. What is it mozhe to be?!
Thanks.

[Grigoriev Alla]

Make a roentgenophotography, an electrocardiogram, US of an abdominal cavity and kidneys. Hand over the general or common analysis wet. Consult with neevrologom