Am I pregnant

Katelyn
Last month I had 16 days of spotting after my one day of bleeding. Usually my period lasts 3-5 days. I have had sex with my SO almost every day sometimes more than once a day. (Even on my period, and days). This month it was 1 day where it was heavier, the rest have been spotting only when I wipe. I have taken 2 tests and they both say negative but am I testing to early or what's going on? Need advice...