Low abdomen pain

Parker
I'm supposed to be getting my period soon. I've had white discharge and an abnormal smell the last few days.. 
Right now, for the last two hours I've had periodic pains that I've never really felt before. 
I'm on the Nuva Ring. I'm 21 years old, so I'm pretty good at this by now also.
Should I be concerned?! The pain gets pretty intense.. About an 8 on a 1-10 scale.