Spotting

Elyssa
Wondering! A week ago I spotted a dark red discharge (blood) my period didn't start. Last Thursday I spotted light pink when I wiped after going to the restroom. Period still didn't start. I took a blood test on Friday it was negative. I'm wondering if anyone has any insights for me? Period was due yesterday 4-5, my cycles are usually 30 days I have NEVER had any kind of spotting like this before. If I do, period comes within a couple hrs.