Period is 9 days late, but urine test are negative. sore breast, exhausted, heartburn that comes and goes, moody and headaches. no bleeding or spottin?

Missed period: Pregnancy is the number one cause for a missed cycle, but since that was ruled out, there are many other possible causes, one being a simple "anovulatory cycle." if you miss your next period and do not have unprotected sex in between, than get an exam and blood work for other causes as well. Best wishes.

Need checked: Urine tests depend on the amount of hormone in the urine, and if there are accurate. However each pregnancy, especially early, involves varying amounts of hormone and the blood level must be high enough for the hormone to get into the urine. It is worth rechecking urine test weekly, but a blood pregnancy test is always reliable.