I am a 25 year old female. About 5'2" and 115lbs. I'm not any medications or vitamins and never have had any health problems to my knowledge. My last pap was clear and was about a year ago. I had a horrible pain below my pelvic region with a brownish discharge only once. No discharge since. I do ultrasound and scanned myself at work, there appears to be a calcification next to the os of my cervix or in the anterior vaginal wall. What could this possibly be?