| Do you have PCOS or any other problem? I say this because I know from experience that I have missed 3 periods before and not been pregnant. I think that if you were a test would be showing up positive by now. 13 weeks late would put you at around 17 weeks pregnant. I've not heard of this before where the test has not been positive. At 17 weeks the tummy, I suspect, would look pretty pregnant. |