Strange mucous...

Ok I've been a little constipated but with slight diarrhea for the last week or so, and this morning I had cramping and when I went to the bathroom just now, there was a lot (1tbsp or more) of milky white mucus and now have lower abdomon pain... Just came off birth control last month (TTC) and I'm not due for af until the 12th. Thoughts? I've been having other slight symptoms, but I can't tell if they're pms symptoms or what...

Thoughts?? Please help...