Six test at home all has a faint line . PLEASE READ.

So last month I had pregnancy symptoms. Sore Brest ,nausea, fatigue and no period. So I went to the clinic and two test come back positive . I was so happy so was my husband. I did as any woman should and called my obgyn and made aptm. I get to the Dr and they did a test and the line was also faint and took forever to show just inside the time limit for the test. So my Dr comes in and wants to do a pelvic sonagrame. He said I wasn't preg. So confused and heart broken I demanded a blood test and he did. he also diagnosed me with endometrioses. Prescribed me a z-pak and I did what he said to do. So I called the next day for the results. Longest night of my life. The Dr gets on the phone and says your test was negative . I was so broken . I took antibiotics like he said. And the day after my Dr aptm. I start bleeding bad cramps throwing up. I felt like I was dying. I bled for 9 days. Took another test after I stopped bleeding and negative. Has anyone experienced this before. Please help shed some light on my hope. I'm in my time frame for ovulation. It started yesterday.