My last period started May 28th it seemed shorter than my periods usually are, and perhaps lighter. I had a copper IUD removed March 2 and have been using only condoms or the pull out method since then. Today (June 15th) I started spotting (10 days before my expected period), it is darker than usual period blood and lighter flow, with a few clots. Could I be pregnant? If so, would it be likely that I conceived only a few days ago, or is it possible that I convinced last month?