Stop bc for a month. Period was then a week late, extreme cramping, huge blood clots and a negative hpt. What does this mean?

Hormones. Bleeding never represents pregnancy. Not sure what you were doing a pregnancy test for. Your body is changing as the levels of hormone fluctuate. This all means your body was unsure what to do next given it was used to steady hormones. In the future, bleeding and cramping do not in any way represent viable pregnancy.

Related Questions

Period late by a week, severe cramping when I finally started thick blood clots, and a negative hpt... What's going on?

May be spontaneous. Loss of early pregnancy. How consistent are you with the use of birth control pills? It is possible that you went through spontaneous loss of an early pregnancy. About a quarter of pregnancies are lost spontaneously due to defects in the fetus. Read more...