AF is due in 3 days..

Jessica
OK, this is my first "TMI" post, so plz bare with me. AF is due in 3 days & we are TTC. The weirdest little flow of clear, watery, liquid just came out of me. It was enough for me to feel it as it actually felt like I was going to the bathroom for a minute. So embarrassing, I know. But this has never happened before.. Could it be a sign of pregnancy or just another lovely PMS symptom?