CONFUSING TEST TESULTS! PLEASE HELP!

Heather
So my period is officially 8 days late and my period is always on time. Never missed. Took a pregnancy test after 4 days late and it was positive. Thought I would just check again to make sure. This time I got negatives more than once and I did see a brownish discharge/blood (idk) when I wiped. I thought I was pregnant but am I really not?? Any and all advice welcomed!