Hi. So I started spotting about a week before my period, dark brown blood and sometimes pinkish. I had very light cramps with it, and they didn't last long. My period showed up about one to two days late. I bled fairly heavily, but still not as heavy as normal, for about 2 days and now it appears to be done. My appetite is increasing, I'm having random cravings, I'm constipated, extremely tired yet having a hard time sleeping, and I've had some lower back pain. Is it possible that I'm pregnant, even though it seems I got my period?