should I take one?

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My period comes in 9 days. 
Me and my boyfriend have unprotected sex, and we did it 23rd, 24th, 25th, and the 26th. 
He makes sure he uses the bathroom beforehand to 'wash' out any possible sperm inside the urethra. He also pulls out of me when he cums so the cum is always on me. 
With this method of peeing before sex, there's still a small chance of sperm entering through precum.(or so I've heard)...
So far this method for us has gone good and we haven't had scares until my recent period which came five days late which I know was due to stress.
I have two First Response tests hidden in my room, should I wait until my period date or take one in the morning?