Two positive tests followed by a negative one, along with heavy bleeding, clots with tissue, and severe cramping, points toward an ongoing miscarriage. The pregnancy hormone can fall fast once a pregnancy is ending, which explains the negative test. Heavy bleeding with this much pain also needs ectopic pregnancy ruled out.
Next Steps
Please go to a gynaecologist or hospital emergency department today, not a video consult. They'll do an ultrasound and a blood test to confirm whether this is a complete or ongoing miscarriage, or something needing urgent treatment. Carry a sample of the tissue if you still have it.
Health Tips
Go to emergency care immediately if you feel faint or dizzy, soak a pad within an hour, get shoulder-tip pain, or develop fever.