Any info helps

My period was irregular but has been pretty regular since november 2019. Last week I had dark brown blood when I wiped just for that day but every time I wiped it would be there.(again just that day)

Fast forward to now I have very light pink blood when I wipe and its very light and it's been happening for like 2-3 days now . pregnancy tests showed negative yesterday... any body go through something like this ? Did you turn out to be pregnant anyways...? Or did your period just play with you ?