Pregnancy increases your risk of having a urinary tract infection (UTI). UTIs are more common in multiple pregnancies than in pregnancies with one fetus. A UTI during pregnancy can be difficult to distinguish from the usual symptoms of pregnancy (such as bladder pressure, frequent urination, or back pain). Some pregnant women who have UTIs have no symptoms at all. Symptoms of a urinary tract infection are: 1  Frequent urination. 2  A feeling of burning during urination. 3  Pain or itching during urination.