I've taken 2 hpt's both have come back negative. I'm exhibiting signs of pregnancy. I had bleeding. No shedding of the uterus. Is it possible I'm preg?

Trust the test. Home pregnancy tests are very accurate. They are the same tests used in a doctors office. They can detect a pregnancy 7-10 days after conception. The best time to take one is when you miss your period. If you doubt the result you can repeat it in 1-2 days. If you were pregnant the hormone level would rise enough for detection.