So I work with a trainer and I just got put on to a new workout regiment Sunday night. It's a very intense workout, with heavier weights and includes the entire body with weights. So last ater this workout, Sunday night I came home and, even though my period was last week (over last wednesday), I found spotting in my underwear. I also have increased vaginal discharge (no spotting). No significant odor. Is this something I should be concerned about?