Question please

I am fairly certain I had implantation cramping 6dpo. 11dpo I have a negative test fmu ( idk if it matters that I had nothing but water and it was around 6 hrs between bedtime pee and morning) is it possible that it was still to early to test? AF is due Sat. I just dont know what to think cause my breasts hurt and they never hurt before AF but idk. This tww messes with your mind. 😕