two pregnancy tests...

Hi everyone... I took a pregnancy test the other day and the line was extremely faint but it was there. I took another one this morning and the line was even fainter than before but ever so slightly still there. I took them both in the morning with my first pee of the day but I've been experiencing some brown CM which I find strange. My period lasted 5 days (started June 2) but it was also around 5 days late. Any insights as to why my second test would be a lighter positive line or what the brown CM could mean? Sorry for the long post It's just been driving me crazy thinking I may or may not be pregnant. Thank you!