Hysterosalpingography (HSG), commonly referred to as a uterine film, is typically performed within the first two weeks following the onset of a woman's menstrual cycle. This timeframe usually coincides with the completion of menstrual bleeding and precedes ovulation. This timing is critically important to rule out any potential pregnancy, as the radiation utilized during the HSG procedure poses a risk to a developing fetus. Additionally, this period allows for optimal visualization of the uterus and fallopian tubes, enhancing the accuracy of the diagnosis.