Help! I hate faint lines....

7dpo

Picture 2:

11dpo

I also took a test 9dpo but don't have the photo anymore. It was even more faint than 7dpo so I was worried I was having a chemical. Used a different brand test for 11dpo and now I'm getting a faint positive. Any insight?? I'm worried something is wrong and not progressing as it should. Could that first test be an indent? I had a MC July 29 but my levels reached zero on August 11.