My husband and I have been trying to conceive for a couple months now. I was due for a period on May 11th, but here I am on the 15th with a negative pregnancy test. This morning I had some light brownish discharge that is consistent with the description for implantation bleeding. Is it normal to have implantation bleeding so late? Is it possible that I could be pregnant even though I've had several negative pregnancy tests within the last week? ↓