The last day of my Menstrual cycle was Jan. 17. I just went to the bathroom and saw spotting. What could that mean? This is the first the today and since my last day that I saw spotting. It's really extremely light but you can tell it's spotting. Me and my boyfriend aren't trying but if it happens it happens. We had intercourse on the 17 18 19 & 21. I don't want to be worried just need some ideas of what might be my problem