Cervix Pain

Allegra

I coughed while going #2 and ever since my cervix has been hurting so badly. it hurts to move in certain positions and sit down. (It kind of feels like, to me, when you have a tampon in the wrong way.) I felt my cervix, and it hurts when touched and has thin, white discharge. I've considered this could be because my period is due this week, and I'm just feeling crampy and ow. I've also considered that I started a new birth control this cycle, Nuvaring, and haven't been using condoms as a precaution, so maybe this is an early symptom of pregnancy? Also, another possibility is some other medical condition. What do you guys think?