is this normal?

TMI! (Possibly)...So I'm on the pill and have been for a year and like 4 months. I'm on week 1 day 7 and day 11 in my cycle and I haven't missed a pill so far. I had unprotected sex last night and he came inside me. I noticed that today my cervical mucus is a light greenish color and a little clumpy, why is this? Should I be worried about something going on, is this normal? Has this happened to someone else before, what did it turn out to be?