Negative HPT but no term surrounded by 8 weeks?
Answers: I think it be just the hormones within the bc. I would wait for it to normalize on its own. I only just got an IUD (lower hormones than pill), and I've read term gradually get less and smaller amount, but mine like instantly go away. Doc says bc is different for adjectives women.
Your body might have a short time ago been thrown rotten because of the burst of hormones you gave it within starting then stopping the birth control. There is also a accidental that you are pregnant. Home pregnancy tests are not foolproof. I would suggest going to the doctor and getting a blood test as resourcefully as talking to her as to what else could be going on. And definately relate your partner what is going on. If you are pregnant, he needs to be involved within what is going on. And even if you're not, he's still a part of this and deserves to know what is arranged.