Possibly pregnant ??

So I was 5 days late on my period I took a test there was a faint positive line, I started bleeding , not a normal period at all. No tampon or pad need, lasted 4 days(June 22), I took a lot more test and all faint but 2 darker test. I went to the er they said my blood test was negative but my cervix were closed & if I was bleeding bc of a period they would be open. Meaning if I was pregnant they would be closed right?? Since then I have gotten 6 more positive test all have been faint tho its July 12 now. Has this happen to anyone or have any idea what this means?