During intercourse, the vagina and the urethra are close to each other, so if you do not pay attention to both partners’ hygiene, cross-infection can cause frequent and urgent urination. If the vagina is overly stimulated during intercourse, it can also cause urinary tract involvement and lead to frequent and urgent urination, which can occur within one day after intercourse and return to normal after one day. However, if urinary tract infections are frequent, it is recommended to go to the hospital for a routine urinalysis to determine whether there is an increase in white blood cells and an increase in urine specific gravity. If necessary, oral medication should be administered according to the test results, and at the same time, you must drink a lot of water when you go back to avoid the situation of persistent urinary tract infections.