I am noticing a discharge that is unusual. It is clear or white in color, but it has the consistency of (for lack of a better word) snot. There is a slight odor to it, however I am not experiencing any pain, or itching. I just got off my period last week, and this morning I had a lot of this discharge, and this afternoon it came in a big clump, and when it hit the water it flattened like a quarter.

This is my fourth month on birth control, and I had unprotected sex yesterday, which after my second pill into my new pack of pills.

I've read that a discharge like this could be a sign of pregnancy, I haven't missed taking a pill at the same time, any ideas on what could be causing this?