Should I test now? AF not due for a couple days...?

This past week has been total agony...over-yzing every possible "symptom." My period isn't due until the 28th or 29th. Do you think I should just test now? I have one First Response test at home...I was kind of hoping to save it, I wanted to have a BFP on some cheap test first and then confirm it on the fancy First Response digital test so I could take a picture of that and use it in the baby scrapbook (yeah, I'm crazy I know)...but I'm so tempted to just test now! What do you think I should do? Test now or wait and see if my period arrives?