28 y/o with fairly normal periods, no birth control, sexually active with husband, no medications, and PCOS. Instead of normal period this month, it started 5 days late and was very light, brown colored discharge. This continued for 4 days and has now becomes a heavier dark brown/reddish discharge with small clots. As it became heavier my pelvic area has been cramping and having spasms that hurt really bad. I must lay down and cannot sit upright in chair. My doc can't see me until next week. What is this? Should I go to the ER.