Generally, hydronephrosis in pregnancy is caused by the pressure of the fetus on the ureter, but other reasons such as kidney stones may also cause this result. During pregnancy, with the gradual growth of the fetus and pressure on the ureter, hydronephrosis is a common phenomenon in pregnant women. This kind of situation generally does not need special treatment. The symptoms of hydronephrosis can be alleviated by reducing the pressure on the ureter, such as sleeping on the side. In addition, drinking more water and urinating frequently can also promote the excretion of bacteria and toxins and avoid causing pyelonephritis. If accompanied with typical low back pain, that is, severe renal colic and gross hematuria, it may be caused by kidney stones, and further examination and diagnosis should be made in the urology department.
