4 Weeks Ago I Got 4 Positive Hpt, 2 Days

4 weeks ago i got 4 positive hpt, 2 days before my period i started bleeding and then got 2 negative tests, 2 weeks later i was still feeling off so took 6 more tests and all were positive, then a week later i started spotting took another test and still positive then the next day on my period due date i started bleeding again and got 4 negative test, can breakthrough bleeding cause a negative hpt?