When should I test?

I had unprotected sex twice 5 days before my period. I'm already late by one day... I was going to wait to test til the last day of my period (if I didn't get it), but I don't know if it's too soon. Cause what if the line is too faint to read yk?

Anyways I don't patience to wait til the 15th, so do you ladies think it's too early for me to test tomorrow?