Several faints line

Kadie
Has this happen to any one. I started having faint line 13 dpo until 9 days late and i have all d symptoms like nausea, breast tender, serious backache, cramping and creamy discharge. I tested again last nite and it was still faint but to my surprise i woke up this morning with heavy bleeding. I am heart broken. What should have caused it. Was all this test fault positive?