Hmmm... it's hard to say for sure, but it sounds like it could possibly be normal discharge. You say it's semi-clear... does it have any color to it? How about an odor? Most women will experience changes in vaginal secretion as they go through their cycles. It can vary from clear and watery, to slightly thicker and whiter and even a slight yellow hue. The important thing is to make sure it does not have a foul odor as that is always an indicator of infection. Or if you experience abnormal pain, irritation, or itching. When in doubt, see your gynecologist!