It's a possibility. Some women do have "periods" while they are pregnant, especially in the beginning. I have one friend that got one period while pregnant, and another who had hers for the first three months. Both of them said the periods were lighter and did not last as long, but they were still similar enough to their regular flow to make them a bit confused. I'm not saying you are but I think it would be worth your time to take a test. That will at least let you know for sure. Good luck. :]