implantation or AF?

Ayisha
I'm 8DPO AF due on the 20th I had spotting around this time last cycle but it wasn't like this, it was brown and there was more. Had a few more drops tonight CM is really thick. Took a test in the morning but got a negative. I know I tested too early but I keep having this strong feeling that I am pregnant. TTC is horrible 😔😔 feeling so down I really hope this isn't AF again!