Me and my boyfriend have been trying to get pregnant for a few months now, like I said in the title I was late but I got my period but it only lasted for two days. That's really abnormal for me. I have been having bad lower back pain, nausea when I eat things I normally don't have a problem with, heartburn, headaches, tiredness, slight abdominal pains. And the bleeding was not a blood color like it usually is , it was a brownish color and it looked a little like mucus.what does that mean? And is there a possibility I could be pregnant?