Possible Pregnancy

Patient: My wife had a c-section 9 weeks ago (September 2, 2011) We had a condom break on Oct 24th, since then, she has had immense cravings for sweets and lots of random foods, and has had a lot of vaginal discharge, milky white in color. She has not yet had a period since the baby was born, but she was possibly ovulating that week, due to her specific symptoms of ovulation, although we did’t test it. We took a HPT today, Nov. 6th, 2011, and it was negative, was it too early to get a positive yet, or is something else causing these symptoms. FYI, she is not breastfeeding.