No Classic Symptoms Yet

I'm 4 days late. Had a negative early test 9 days ago. Planning to test tomorrow or go to a clinic, but I'm very nervous. I've never skipped a period outside of birth control and Glow has been predicting my periods within a day.

What do you think?

Possible signs:

-Spotting a week ago

-Chronic migraines with aura and nausea just after my ovulation window

-Sore nipples only, not unusually so

-Discharge smells different

-Stopped bloating like I normally do before my period