There are two cases of frequent urination after pregnancy: in the first case, it is because the uterus enlarges after pregnancy and the body of the uterus compresses the bladder, which may lead to a reduction in bladder capacity, and under the effect of compression, the bladder may feel frequent and want to urinate when it is slightly distended, which is an irritating irritation caused by compression. In the second case, after pregnancy, there may be urinary tract infections, that is, urethritis, cystitis, etc. Under the stimulation of inflammation may appear frequent urination, urinary urgency, painful urination, or even fleshy pus and blood urination, serious point may be chills, fever, etc. If there is no inflammation, no treatment is needed and you may drink more water. If there is inflammation, you must be careful with the medication to prevent the medication from affecting the fetus.