What causes frequent urination in pregnant women and severe vomiting?

Patient's question:

No

Doctor's answer:

Frequent urination time pattern During the first three months of pregnancy, expectant mothers are particularly prone to frequent urination because the uterus gradually expands, reducing bladder capacity. After the fourth month of pregnancy, the pressure on the bladder diminishes, and frequent urination is somewhat relieved. In the late stages of pregnancy, when the baby's head enters the pelvis, it again compresses the bladder, causing frequent urination. Increased nighttime urination while daytime urination remains normal—more frequent trips to the bathroom at night—are all very normal physiological phenomena of carrying a baby.