NEED HELP!!

Sarah • 20 | Wife to Mr. Jeremy | my husband and I are TTC for the first time. Found this app in hopes that it could help us.💖
My period hasn't really been a period. The first day was really heavy and the next 4 days after was pretty much dark red spotting. I TTC November 1...took a pregnancy test November 15..came out negative. My period has never acted the way it has been now. Not sure what to do. I would like someone's opinion on this please!