Clear discharge before your period is often a normal part of the menstrual cycle. Hormonal changes can affect cervical mucus, making it appear clear, watery, sticky, or stretchy at different times. While clear discharge is commonly associated with ovulation, changes may also occur as your period approaches. However, discharge accompanied by a strong odor, itching, irritation, unusual color, or pelvic pain may require medical evaluation. USA Fibroid Centers notes that changes in discharge alongside symptoms such as heavy or prolonged periods, pelvic pain, or spotting may warrant evaluation for uterine fibroids.
https://www.usafibroidcenters.com/blog/what-does-discharge-look-like-before-your-period/