Hey, since your period is that late, I would definitely see a doctor about it. The urine pregnancy tests aren't always very effective because you may not have enough HCG in your system for it to detect. I've read about women who didn't get a positive result until around 2 months! Instead of waiting that long and torturing yourself, go see your doctor. A number of things can delay your period or even cause you to skip one. They'll be able to tell you more, and do a blood test to be sure. Let me know what happens! Good Luck!!