Have it check out
There are many reasons for this, some are not scary, some are bad.
Please see your doctor to get this evaluated. It's important to know if it's on both side, what color is it, do you have to press it to extract the fluid or does it just leaks out. Depending on the answers above, your doctor might order you additional testins and/or hormonal labs to make sure you don't have a pituitary tumor