Should I test?

AF due tomorrow.... Cervix is high and open(I can basically stick a finger in there, lol) and at least one time for the past three/four days when I wipe there is a nice stretch of egg white(clear sticky and stretchy) discharge.....
If I test tonight with a first response early result test, IF I was pregnant, would it show, or do I have to wait/should I wait until tomorrow AM. 
~I've taken cheapies mid day and they are negative~

Glow Resources

Let’s Glow

Glow is here for you on your path to pregnancy

Glow helps you navigate your fertility journey with smart tools, personalized insights, and guidance from medical experts who understand what matters most.

25+ million

Users

4.8 stars

200k+ app ratings

20+

Medical advisors