Chemical pregnancy.. Please help

Megan
Hey ladies. So I am afraid that I may have had one. I had my period on November 4-10.. I was two weeks late on the 19.  I tested on the 19 And got a very faint positive. As time proceeded I kept getting positives.. Yesterday I spotted light brown then became a full blown period.. This morning i tested and got a positive but I know if I had a chemical pregnancy I would still have the hormone. I've also read that if it was a chemical it would be a light period not a full blown one. So what were your experiences? Thoughts? Opinions? How long will i continue to get positives? Could it be just a period? Help!!!!!!!